RCS FAQ Library — SimplyRCS

The complete FAQ library: hundreds of questions people ask search engines and AI assistants about RCS, each with a self-contained direct answer and related links. Organized by the ten content clusters.

RCS Fundamentals

Basics

What is RCS?

Quick answer. RCS (Rich Communication Services) is the modern upgrade to SMS texting. It is an open GSMA standard that turns the phone's built-in messaging app into a rich, interactive channel — high-resolution media, branded verified senders, read receipts, and tap-to-act buttons — with no app to download, and it falls back to SMS when unavailable.

What is RCS messaging?

Quick answer. RCS messaging is sending and receiving messages over the Rich Communication Services protocol. For people it means richer texting (media, reactions, read receipts); for businesses (RCS Business Messaging) it means verified, branded, interactive messages in the customer's default inbox, with automatic SMS fallback.

Related: What is RCS Business Messaging? · What is an RBM agent?

What does RCS stand for?

Quick answer. RCS stands for Rich Communication Services — the GSMA's open messaging standard designed to replace SMS and MMS with a richer, interactive, internet-based experience inside the phone's default messaging app.

What is Rich Communication Services?

Quick answer. Rich Communication Services (RCS) is the formal name for the GSMA standard that modernizes SMS/MMS, bringing app-like features — media, verified branding, buttons, read receipts, typing indicators — into the native messaging app with no separate download.

What is RCS Business Messaging?

Quick answer. RCS Business Messaging (RBM) is the application-to-person side of RCS that lets verified brands send rich, interactive messages — order updates, offers, reminders, two-way support — to customers' native inboxes, with automatic SMS/MMS fallback. SimplyRCS is an RCS Business Messaging platform.

What is RBM?

Quick answer. RBM stands for RCS Business Messaging — the framework and ecosystem for businesses to send verified, branded RCS messages to customers. The brand sends through a verified RBM agent via a provider's API or app.

Related: What is an RBM agent?

Is RCS an app?

Quick answer. No. RCS is not a separate app or network — it is a protocol built into your phone's default messaging app (Google Messages on Android, the Messages app on iPhone with iOS 18.1+). There is nothing extra to install.

Related: Do I need an app for RCS?

Is RCS the same as SMS?

Quick answer. No. SMS sends plain text over the cellular network; RCS sends rich, interactive, branded messages over the internet and falls back to SMS when unavailable. You use the same texting app, but RCS does far more.

Related: RCS vs SMS · Is RCS the same as texting?

Is RCS the same as texting?

Quick answer. RCS is the upgraded form of texting. Ordinary texting (SMS) is plain text; RCS adds images, buttons, read receipts, and verified branding in the same app, with SMS fallback when RCS isn't available.

How RCS works

How does RCS work?

Quick answer. RCS sends messages over the internet (Wi-Fi or mobile data) using the GSMA Universal Profile for interoperability. A capability check decides whether the recipient can receive RCS; if yes, it delivers richly through an RCS backend (largely Google's Jibe); if no, it falls back to SMS/MMS.

Does RCS use the internet?

Quick answer. Yes. RCS is IP-based — it travels over Wi-Fi or mobile data rather than the legacy cellular text channel, which is how it carries rich media and real-time signals like read receipts.

Related: Does RCS use data or Wi-Fi?

Does RCS use data or Wi-Fi?

Quick answer. RCS uses either Wi-Fi or mobile data — whichever internet connection your phone has. Data usage is minimal for text and modest for media. Without a connection, messages fall back to SMS.

Related: Does RCS work without internet?

Does RCS work without internet?

Quick answer. No — RCS needs an internet connection. Without Wi-Fi or mobile data, your phone automatically sends the message as SMS or MMS over the cellular network instead, so it still gets through.

Related: Does RCS fall back to SMS?

Does RCS fall back to SMS?

Quick answer. Yes. When a recipient can't receive RCS — wrong device, no support, or no data — the message is automatically delivered as SMS or MMS. This fallback is why adopting RCS never costs you reach.

Related: What happens if the recipient doesn't have RCS?

What happens if the recipient doesn't have RCS?

Quick answer. The message is delivered as a standard SMS or MMS instead. RCS performs a capability check first and downgrades gracefully, so the message always arrives — just without the rich features.

Who owns RCS?

Quick answer. No single company owns RCS. It is an open standard owned by the GSMA. In practice, Google operates the dominant backend (Jibe) and Google Messages app, carriers deliver it, and Apple supports it on iPhone since iOS 18.1.

Related: What is the Google Jibe platform? · Who controls RCS?

What is the Universal Profile?

Quick answer. The RCS Universal Profile is the GSMA specification that defines how RCS works so it is interoperable across carriers and devices. Universal Profile 3.0 (March 2025) added end-to-end encryption; Universal Profile 4.0 was finalized in March 2026.

Related: Is RCS encrypted?

What is the Google Jibe platform?

Quick answer. Jibe is Google's RCS backend — the infrastructure that powers RCS delivery for most carriers and for Google Messages. When a business sends RCS in most markets, it travels through Jibe to reach the recipient.

Related: Does Google support RCS?

Adoption & importance

Is RCS replacing SMS?

Quick answer. RCS is upgrading and gradually replacing SMS, but not fully — SMS remains the universal fallback. The practical model is RCS-first with SMS fallback: rich where supported, plain text everywhere else.

Is RCS replacing MMS?

Quick answer. Where supported, RCS effectively replaces MMS for media — it sends high-resolution images and video versus MMS's compressed, size-limited files — while MMS remains a fallback for non-RCS devices.

Related: RCS vs MMS

Why is RCS important?

Quick answer. RCS fixes business texting's two weaknesses at once: it restores trust (verified, branded senders instead of anonymous numbers) and adds engagement (rich, interactive content). With Apple's 2024 support, it became near-universal across modern phones.

Related: What problem does RCS solve?

What are the benefits of RCS?

Quick answer. The core benefits are trust, richness, interactivity, and measurability — without an app. Verified branding, high-res media, tap-to-act buttons, and read/click analytics drive engagement far above SMS, while SMS fallback preserves reach.

What problem does RCS solve?

Quick answer. RCS solves the trust-and-engagement gap in business texting: SMS reaches everyone but arrives as plain text from an unrecognized number. RCS adds verified branding, rich media, and buttons, and still falls back to SMS so no reach is lost.

How many people use RCS?

Quick answer. RCS reach has scaled fast. Juniper Research put it at roughly 1.1 billion active users in 2024, projected to reach about 3.8 billion by the end of 2026. Figures vary by source, so always attribute and date them.

Related: Global RCS adoption statistics

Is RCS the future of texting?

Quick answer. RCS is widely seen as the upgrade path for texting — branded, rich, and interactive — with SMS persisting as the universal fallback. After Apple's 2024 support it became near-universal on modern phones.

Features

Can RCS send pictures and videos?

Quick answer. Yes — RCS sends high-resolution photos and videos natively, without the heavy compression and small size limits of MMS. It also supports GIFs, PDFs, and rich cards and carousels for businesses.

Related: RCS vs MMS

Does RCS have read receipts?

Quick answer. Yes. RCS supports read receipts (and delivery receipts), so senders can see when a message was read — a feature SMS lacks. Users can usually turn read receipts off in settings.

Related: Can businesses tell if I read their message?

Does RCS show typing indicators?

Quick answer. Yes — RCS shows typing indicators (the “...” animation), like modern chat apps, which SMS does not support.

What is a verified sender?

Quick answer. A verified sender is a business RCS identity vetted by Google and the carriers, shown with the brand's name, logo, and a verification checkmark — RCS's built-in anti-spoofing signal.

Related: Can RCS be spoofed?

What are suggested replies?

Quick answer. Suggested replies are tappable buttons that send a predefined response in one tap, with no typing — a clean way for businesses to steer a conversation (Confirm, Reschedule, Yes/No).

Related: What are suggested actions?

What are suggested actions?

Quick answer. Suggested actions are tappable buttons that trigger a device action — open a URL, dial a number, view a location, or add a calendar event — turning a message into a one-tap task.

What is a rich card?

Quick answer. A rich card is a single RCS message combining media, a title, a description, and tap-to-act buttons — ideal for order confirmations, reminders, and product highlights.

Related: What is a carousel?

What is a carousel?

Quick answer. A carousel is a horizontally swipeable set of rich cards in one RCS message (2–10 cards), great for showing multiple products, menu items, or properties.

What is the character limit for RCS?

Quick answer. RCS supports far longer messages than SMS — thousands of characters in one message versus SMS's 160-character segments — plus rich media that SMS can't carry.

Can you have group chats in RCS?

Quick answer. Yes — RCS supports group chats with richer features than SMS group texts, including media, reactions, and read receipts among participants who have RCS.

RCS vs other channels

What is the difference between RCS and SMS?

Quick answer. RCS is rich, branded, and interactive over the internet with read receipts and buttons; SMS is plain text over the cellular network with universal reach. Use RCS where supported and SMS as the universal fallback.

Related: RCS vs SMS pricing

RCS vs MMS — what's the difference?

Quick answer. RCS sends high-resolution media with interactivity and branding over the internet; MMS sends compressed, size-limited media over the cellular network with no interactivity. RCS supersedes MMS where supported, with MMS as fallback.

RCS vs WhatsApp — what's the difference?

Quick answer. Both offer rich, branded, two-way messaging, but RCS lives in the phone's native inbox with no app, while WhatsApp requires the app. RCS is strongest in markets like the US; WhatsApp dominates in many international markets.

Related: Is RCS like WhatsApp?

RCS vs iMessage — what's the difference?

Quick answer. iMessage is Apple-only and proprietary; RCS is the open, cross-platform standard between Android and iPhone. Both now support end-to-end encryption for personal chats; RCS is the cross-platform branded business channel.

Related: Is RCS the same as iMessage?

RCS vs email — which is better?

Quick answer. They are complementary: RCS wins on immediacy and engagement (inbox reads, high CTR); email wins on long-form content, attachments, and archiving. Most businesses use RCS for time-sensitive, action-oriented messages and email for depth.

RCS vs push notifications — which is better?

Quick answer. Push needs an installed app and notification opt-in; RCS reaches the native inbox with no app. Push is free per message for existing app users; RCS reaches the much larger group who never install the app, at a per-message cost.

RCS vs mobile apps — which is better?

Quick answer. Apps offer the deepest experience but demand a download most customers skip; RCS delivers much of the app-like experience in the inbox with nothing to install. Many brands use RCS for reach and an app for power users.

Related: Can RCS replace a loyalty app?

RCS vs Facebook Messenger — which is better?

Quick answer. RCS reaches the native inbox with no third-party app and falls back to SMS; Messenger only reaches people who use it and have connected with your business there.

RCS vs in-app messaging — which is better?

Quick answer. In-app messaging only reaches customers while they're in your app; RCS reaches them in the native inbox anytime, with no app. They complement each other — in-app for in-session guidance, RCS for outbound re-engagement.

Using RCS (consumer FAQs)

Is RCS free?

Quick answer. For everyday users, RCS is free to send and receive — no per-message carrier charge like SMS/MMS — because it uses your data. For businesses, RCS is a paid channel (per message plus carrier fees).

Related: Does RCS cost money to receive?

Do I need an app for RCS?

Quick answer. No — RCS is built into Google Messages on Android and the Messages app on iPhone (iOS 18.1+). There is nothing extra to download.

Related: Is RCS an app?

How do I turn on RCS?

Quick answer. On Android, open Google Messages settings and turn on chat features/RCS. On iPhone (iOS 18.1+), go to Settings, Messages, RCS Messaging, and toggle it on. A supported carrier and data connection are also required.

Related: How do I turn off RCS? · Why is my RCS not working?

How do I turn off RCS?

Quick answer. Use the same setting: in Google Messages turn off chat features/RCS; on iPhone go to Settings, Messages, RCS Messaging and toggle off. Messages then send as standard SMS/MMS.

Why is my RCS not working?

Quick answer. RCS needs an RCS-capable phone, a supporting carrier, a data connection, RCS enabled, and a recipient who can also receive it. If any is missing, messages send as SMS. Update your software, confirm RCS is on, and check your connection.

Related: Why did my RCS message fail to send?

Does RCS work between iPhone and Android?

Quick answer. Yes. Since iOS 18.1 (late 2024), RCS works between iPhone and Android, with rich features across platforms; as of iOS 26.5 (May 2026) those chats can be end-to-end encrypted. Both sides need RCS enabled and supported.

Related: Does Apple support RCS?

What does the lock icon on an RCS message mean?

Quick answer. It means the conversation is end-to-end encrypted — readable only by you and the recipient. Cross-platform E2EE rolled out in 2026; it applies to personal chats, while business messages are encrypted in transit but platform-processed.

Related: Is RCS encrypted?

Is RCS safe?

Quick answer. Yes — RCS is among the safer mainstream channels: encrypted in transit, end-to-end encrypted for personal chats, and verified senders for business messages that resist the spoofing that plagues SMS. Treat unexpected links with normal caution.

Related: Is RCS secure? · Is RCS safer than SMS?

Business RCS

Adoption

What businesses should use RCS?

Quick answer. Any business that texts customers and benefits from branding, rich content, interactivity, or measurement — most of them. It is especially valuable for visual/time-sensitive messages (retail, restaurants, travel), trust-critical ones (finance, healthcare), and two-way experiences (loyalty, support).

Is RCS worth it?

Quick answer. For most businesses that message customers, yes — it lifts engagement and conversion well above SMS while falling back to SMS so reach isn't lost. The gain depends on how much of your audience is RCS-capable and whether messages benefit from rich content.

Related: What is the ROI of RCS?

What industries benefit from RCS?

Quick answer. Industries with frequent, visual, time-sensitive, or trust-critical messaging: retail and e-commerce, restaurants, financial services, healthcare, travel and hospitality, automotive, and real estate — each applying RCS to its own flows.

How much does RCS improve engagement?

Quick answer. RCS commonly delivers click-through rates of 15–30% versus low single digits for SMS, with high read rates. Real campaigns have seen large lifts (e.g., Subway ~140% higher conversion on a test offer); results vary, so treat figures as attributed examples.

Related: What is the ROI of RCS?

What is the ROI of RCS?

Quick answer. ROI is incremental revenue minus all-in cost, divided by cost — usually strong for fitting use cases because RCS's higher click-through and conversion outweigh its modest per-message premium. Judge on cost per outcome, not per message.

How does RCS improve customer experience?

Quick answer. RCS makes messages trustworthy (verified brand), useful (rich, clear info), and effortless (one-tap actions, two-way self-service) — no app needed. It also cuts call volume; one financial-services provider reported 42% fewer calls and 300% faster resolution.

Related: RCS and customer service

Can small businesses use RCS?

Quick answer. Yes — there's no app to build and a platform handles setup — but it requires brand and campaign registration, a verified sender, and usually a minimum. It suits SMBs with ongoing, meaningful messaging volume.

Is RCS only for enterprises?

Quick answer. No. RCS earned an enterprise reputation early due to setup and minimums, but platforms have made it accessible to small and mid-sized businesses. The dividing line is commitment and volume, not company size.

Strategy

When should I use RCS instead of SMS?

Quick answer. Use RCS when your audience is RCS-capable and the message benefits from branding, rich media, interactivity, or measurement — most marketing and many transactional flows. Lead with RCS and let SMS fallback handle the rest automatically.

When should I use SMS instead of RCS?

Quick answer. Use SMS when universal reach and simplicity matter most — messages that must reach every device, plain one-time passcodes, or recipients who aren't RCS-capable. In practice SMS is the automatic fallback rather than a deliberate choice.

Can I use both RCS and SMS?

Quick answer. Yes — it's the recommended model. You send RCS-first to everyone, and anyone who can't receive it automatically gets SMS/MMS, in one send. A good platform handles the capability check and fallback for you.

Related: What is an RCS-first strategy?

How do I migrate from SMS to RCS?

Quick answer. Migration is additive: keep SMS as fallback and add RCS on top. Register your brand and campaign, verify an RCS sender, enable fallback, convert high-value flows first, measure, then expand. Reach is protected throughout.

Related: What is an RCS-first strategy?

What is an RCS-first strategy?

Quick answer. Defaulting to RCS for customer messaging and using SMS only as automatic fallback. Every message is built to deliver richly to RCS-capable recipients and degrade gracefully to SMS, in a single send.

Related: Can I use both RCS and SMS?

Does RCS work for marketing?

Quick answer. Yes — RCS is well-suited to marketing: branded carousels, offers with imagery and buy buttons, and high click-through. It requires explicit opt-in and a promotional use case, with SMS fallback for non-RCS recipients.

Related: Retail promotions with RCS

Is RCS good for customer support?

Quick answer. Yes — RCS enables branded, two-way support with suggested replies, AI agents, and human handoff in one thread, reducing call volume and speeding resolution.

Related: RCS and customer service

How do I get started with RCS?

Quick answer. Choose a provider, register your brand and campaign, verify your RCS sender, set up consent and opt-out handling, then start with a high-value flow (offers, confirmations, reminders) and expand. A platform like SimplyRCS manages carrier approval and fallback.

Do I need opt-in to send business RCS?

Quick answer. Yes — explicit opt-in is required before sending business RCS, and consent can't be presumed. Marketing needs prior express written consent; transactional needs prior express consent.

Related: How does RCS consent work?

Technical RCS

Architecture

How does RCS messaging work technically?

Quick answer. RCS sends over IP using the GSMA Universal Profile. A capability check confirms the recipient can receive RCS; if so it routes through an RCS backend (largely Google Jibe) to the messaging app; if not it falls back to SMS/MMS. Businesses send via a verified RBM agent through a provider API.

Related: How does RCS routing work?

What is an RBM agent?

Quick answer. An RBM (RCS Business Messaging) agent is a brand's verified sender identity in RCS — carrying its name, logo, and verification — with an assigned use case (OTP, transactional, promotional, or multi-use) and an agent ID used in the API.

Related: What is an RCS agent? · What is a verified sender?

What is an RCS agent?

Quick answer. An RCS agent is the same as an RBM agent — a business's verified RCS sender identity, with a brand profile, a use case, and an agent ID. The terms are used interchangeably.

What is a verified sender (technical)?

Quick answer. A verified sender is a launched, approved RBM agent that Google and carriers have vetted, displayed with the brand's name, logo, and checkmark — the core anti-spoofing mechanism in RCS.

What is an RCS chatbot?

Quick answer. An RCS chatbot is an automated two-way conversational experience delivered through an RCS agent using the MaaP framework — greeting users, offering suggested replies/actions, completing tasks, and handing off to a human or AI when needed.

Related: RCS and AI agents

What is MaaP?

Quick answer. MaaP (Messaging as a Platform) is the framework that enables chatbots and interactive services within RCS, allowing agents to deliver conversational, app-like experiences in the messaging inbox.

What is the Google Jibe platform (technical)?

Quick answer. Jibe is Google's hosted RCS backend that handles registration, capability discovery, routing, and delivery for most carriers and Google Messages. RCS Business Messaging connects to Jibe to reach recipients.

What is Universal Profile (technical)?

Quick answer. The GSMA Universal Profile is the spec defining RCS features and enablers so implementations interoperate. Version 3.0 (March 2025) added E2EE via the MLS protocol; 4.0 was finalized March 2026 with video calls and rich text.

Related: Is RCS encrypted?

How does RCS routing work?

Quick answer. Routing starts with a capability check per destination. RCS-capable numbers receive the message over IP via the backend; others (or failed sends) route as SMS/MMS. The delivered-as-RCS-vs-fallback outcome is reported back for measurement.

Related: What happens if the recipient doesn't have RCS?

What use cases can an RBM agent have?

Quick answer. An RBM agent has a defined use case: OTP (one-time passcodes), Transactional (notifications/updates), Promotional (marketing), or Multi-use (transactional plus promotional, but not OTP). The use case governs what the agent may send.

Developer

What is the RCS API?

Quick answer. The RCS API is a REST interface to send messages from a verified agent and receive interactions via webhooks. You authenticate, check a number's RCS capability, then POST a message (text, rich card, or carousel) addressed by agent ID.

Related: RCS webhook guide

How do I send an RCS message via API?

Quick answer. Make an HTTPS POST with a JSON body describing the message (text or rich card with suggestions) to the send endpoint, addressed by your agent ID, after a capability check. Non-RCS recipients fall back to SMS/MMS.

Related: What is the RCS API?

What is an RCS webhook?

Quick answer. A webhook is the HTTPS endpoint where the platform sends real-time events — inbound messages, taps on suggestions (with postbackData), delivery and read receipts, typing, and opt-in/opt-out. You verify requests and acknowledge with a 200.

Related: What are RCS event types?

What are RCS event types?

Quick answer. Common events: delivered, read (seen), inbound user message, suggestion response (a tap, carrying postbackData), is-typing, delivery failure/fallback, and subscribe/unsubscribe (opt-in/opt-out).

What are RCS message formats?

Quick answer. RCS business messages come as plain text (optionally with a chip list of suggestions), a standalone rich card (media, title, description, buttons), or a carousel (2–10 rich cards). They can include media like images, GIFs, video, and PDFs.

Related: What is a rich card? · What is a carousel?

What is postbackData?

Quick answer. postbackData is a string attached to a suggested reply or action that your webhook receives when the user taps it — letting you map the tap to intent without parsing free text.

How many suggestions can a rich card have?

Quick answer. A rich card can include up to four suggested replies and actions, plus up to 11 suggestions in a chip list below the card. Suggested replies can be up to about 25 characters.

How many cards can a carousel have?

Quick answer. A carousel must contain at least 2 and at most 10 cards; all cards share the same width and all media the same height. Two to five cards tends to engage best.

What is a suggested reply (developer)?

Quick answer. A suggested reply is a tappable button that sends a predefined response with display text and a postbackData value, returned to your webhook — the cleanest way to capture intent without free-text parsing.

What is a suggested action (developer)?

Quick answer. A suggested action is a tappable button that triggers a device action — open URL, dial, view location, share location, or create a calendar event — each with display text, postbackData, and an action-specific block.

Does RCS support SMS fallback in the API?

Quick answer. Yes — a good RCS API performs a capability check and automatically falls back to SMS/MMS for non-RCS recipients, and reports whether each message was delivered as RCS or fallback.

Can I use RCS with my CRM?

Quick answer. Yes — RCS platforms integrate via API and webhooks, so CRMs (Salesforce, HubSpot, Zoho) and other systems can trigger messages on events (order placed, appointment booked) and receive replies and delivery data.

Carrier & Ecosystem

US carriers

Which carriers support RCS?

Quick answer. In the US, all three major carriers — AT&T, Verizon, and T-Mobile — support RCS, plus UScellular and many prepaid/MVNO brands (Cricket, Metro, Visible, Xfinity Mobile, Spectrum, Boost, and more). By the end of 2024 every major US carrier had added RCS.

Related: Does Verizon support RCS?

Does Verizon support RCS?

Quick answer. Yes. Verizon supports RCS via Google Messages on Android and the Messages app on iPhone (iOS 18.1+), and supports the encrypted RCS added in iOS 26.5. Verizon ended Samsung Messages RCS in January 2025, directing Android users to Google Messages.

Does AT&T support RCS?

Quick answer. Yes. AT&T supports RCS via Google Messages and on iPhone (iOS 18.1+), including encrypted RCS. Its older Advanced Messaging RCS is being retired in July 2026, after which RCS on AT&T Android runs through Google Messages.

Does T-Mobile support RCS?

Quick answer. Yes — T-Mobile was the first US carrier to launch RCS. It supports RCS via Google Messages and on iPhone (iOS 18.1+), including encrypted RCS, and its sub-brands like Metro also support it.

Does Google support RCS?

Quick answer. Yes — Google drives RCS. It operates the dominant backend (Jibe) used by most carriers, makes Google Messages the primary Android RCS client, and has rolled out RCS in most countries.

Does Apple support RCS?

Quick answer. Yes — iPhone supports RCS since iOS 18.1 (late 2024), and iOS 26.5 (May 2026) added default cross-platform end-to-end encryption (beta). Apple's RCS is carrier-dependent and expanding by country; the major US carriers support it.

Related: Does RCS work between iPhone and Android?

Does Samsung support RCS?

Quick answer. Yes — Samsung phones are RCS-capable, but increasingly via Google Messages rather than Samsung Messages, as US carriers consolidate on Google Messages (Verizon ended Samsung Messages RCS in January 2025). Set Google Messages as default for the best experience.

Does UScellular support RCS?

Quick answer. Yes — UScellular supports RCS, and like the other carriers it applies per-message A2P carrier surcharges for business messaging.

Do prepaid carriers support RCS?

Quick answer. Many do — popular prepaid and MVNO brands such as Cricket, Metro by T-Mobile, Visible, Xfinity Mobile, Spectrum Mobile, and Boost support RCS, typically via Google Messages on Android.

Why does RCS only work in Google Messages on my carrier?

Quick answer. US carriers have standardized Android RCS on Google's Jibe backend and the Google Messages app, retiring carrier-specific and Samsung Messages implementations. Setting Google Messages as your default app gives the most reliable RCS.

Global & market

Which countries support RCS?

Quick answer. Consumer RCS via Google Messages is available in most countries. Business RCS is a smaller but growing set — strong in the US, UK, France, Germany, Italy, Spain, Netherlands, Brazil, Mexico, India and others — with coverage depending on carriers and your provider.

Related: Is RCS available worldwide?

Is RCS available worldwide?

Quick answer. Nearly, for consumers — Google has rolled out RCS in most countries via Google Messages. Business RCS is more limited and carrier/provider-dependent, and Apple's iPhone support is still expanding market by market.

What are the global RCS adoption statistics?

Quick answer. Juniper Research put RCS at ~1.1 billion active users in 2024, projected to ~3.8 billion by end of 2026 (~40% of mobile subscribers). Google reported >1 billion US RCS messages/day as of May 2025; business traffic reached ~50 billion messages in 2025. Figures vary by source.

Related: How many people use RCS?

What is the RCS market size?

Quick answer. Estimates vary widely: most analyses put the global RCS market in the high single-digit billions of dollars in 2026 (around $9–$10B), growing to roughly $19B by 2028 to $28–$35B by 2035 depending on the report.

Related: What is the RCS growth rate?

What is the RCS growth rate?

Quick answer. RCS is among the fastest-growing messaging channels — market-value CAGR estimates run from the mid-teens to mid-30s percent by report, and Apple's 2024 support reportedly drove a ~500% surge in global RCS traffic that year.

Which country has the most RCS adoption?

Quick answer. India and the wider Asia-Pacific region lead RCS business-messaging adoption, with India reporting some of the highest rates of consumers interacting with brands via RCS. The US saw rapid growth after Apple's 2024 support.

Does RCS work internationally?

Quick answer. It can, depending on carrier support and a data connection in both locations. Consumer RCS via Google Messages works across many borders; business reach depends on the provider and destination carriers, with SMS fallback otherwise.

Related: Which countries support RCS?

How big is RCS in the US?

Quick answer. Large and growing — RCS reaches over 80% of smartphone users in the US, all major carriers support it, and Google reported more than 1 billion RCS messages sent per day in the US as of May 2025.

Who are the main players in the RCS ecosystem?

Quick answer. The GSMA (standard), Google (Jibe backend and Google Messages), Apple (iPhone support), the mobile carriers (delivery), and messaging providers/aggregators like SimplyRCS, Twilio, Sinch, and Infobip (business access).

Compliance & Security

Compliance

Is RCS regulated?

Quick answer. Yes. US RCS business messaging is governed by the TCPA (federal law, FCC-enforced), the CTIA Messaging Principles (carrier-enforced), and carrier/Google registration rules. CTIA guidelines cover SMS, MMS, and RCS alike for A2P.

Related: How does RCS consent work?

Quick answer. On an explicit opt-in model: a business must get clear, affirmative permission before sending, and consent can't be presumed. Marketing needs prior express written consent; transactional needs prior express consent. Record source, method, and timestamp.

Related: RCS opt-in requirements

What are RCS opt-in requirements?

Quick answer. A clear call-to-action stating the brand, message purpose, frequency, that message and data rates may apply, opt-out instructions, and links to terms and a privacy policy — plus explicit, recorded consent before the first message.

Related: How does RCS consent work?

What are RCS opt-out requirements?

Quick answer. Honor opt-outs promptly: under FCC rules effective April 11, 2025, consumers can revoke by any reasonable method, keywords like STOP/QUIT/END/CANCEL/UNSUBSCRIBE/OPT OUT/REVOKE count, you must stop within 10 business days, and may send only one confirmation.

Related: How does RCS consent work?

What are RCS privacy rules?

Quick answer. No single RCS privacy law — obligations come from TCPA/CTIA, state privacy laws (CCPA/CPRA), and GDPR for EU contacts. Keep a privacy policy linked from opt-in, use data only as disclosed, and honor access/deletion rights.

Related: Is RCS encrypted?

Is there an RCS compliance checklist?

Quick answer. Yes: register brand and campaign; verify your sender; publish a compliant call-to-action; capture explicit consent (written for marketing); send a confirmation; honor STOP within 10 business days; link privacy/terms; avoid prohibited content; keep consent records 5+ years.

Related: RCS opt-in requirements

Quick answer. Yes — explicit opt-in is required, and it can't be inferred from behavior. Marketing requires prior express written consent; transactional/informational requires prior express consent.

What is the revoke-all rule?

Quick answer. An FCC TCPA provision that would make a single opt-out apply to all of a sender's future messages on unrelated topics. It has been delayed to January 31, 2027 — build toward it, but it isn't fully in force yet.

Quick answer. At least five years from the date of consent and outreach, per the FTC's Telemarketing Sales Rule — documentation that serves as proof of consent if challenged.

What is SHAFT content?

Quick answer. SHAFT stands for Sex, Hate, Alcohol, Firearms, and Tobacco — categories restricted or prohibited in A2P messaging. Carriers can fine senders for prohibited content, so RCS programs must avoid it.

Security

Is RCS encrypted?

Quick answer. Yes — all RCS messages are encrypted in transit (TLS). Personal (P2P) chats are now end-to-end encrypted (GSMA Universal Profile 3.0 via MLS; default in iOS 26.5, May 2026). Business (A2P) RCS is transit-encrypted and platform-processed — not end-to-end encrypted.

Related: Is RCS secure?

Is RCS secure?

Quick answer. Yes — among the more secure mainstream channels: encrypted in transit, end-to-end encrypted for personal chats, and verified senders that resist spoofing. Security still depends on sender hygiene (protect API keys, limit access, minimize sensitive data).

Related: Is RCS safer than SMS?

Can RCS be spoofed?

Quick answer. Business RCS is far harder to spoof than SMS because every legitimate message comes from a verified RBM agent vetted by Google and carriers, shown with the brand's name, logo, and checkmark. The verification badge is the consumer's anti-spoofing signal.

Related: What is a verified sender?

Is RCS safer than SMS?

Quick answer. Yes — for both consumers and businesses. RCS adds verified sender identity, transit encryption, P2P end-to-end encryption, and enforced opt-in; SMS sender IDs are easily spoofed, which is why text phishing is common.

What are RCS security best practices?

Quick answer. Send only from a verified sender; get explicit opt-in and pre-approved use cases; protect API keys and verify webhooks; use least-privilege team access; avoid sending unnecessary sensitive data; monitor for abuse; and keep consent and audit logs.

Is business RCS end-to-end encrypted?

Quick answer. No — business (A2P) RCS is encrypted in transit but processed by the sending platform (to render analytics and fallback), like other business channels. End-to-end encryption applies to personal chats, not A2P.

Related: Is RCS encrypted?

Is RCS HIPAA compliant?

Quick answer. RCS can be used in healthcare with proper safeguards (consent, BAAs where applicable, minimal data), but because business RCS isn't end-to-end encrypted, avoid sending sensitive clinical detail you wouldn't put in any business message. Consult counsel.

Related: Patient communications with RCS

Can I send OTPs over RCS?

Quick answer. Yes — a dedicated OTP agent type exists for one-time passcodes. Treat OTPs as sensitive: send only the code and minimal context, and rely on RCS's verified sender to reduce phishing risk.

Is RCS phishing a risk?

Quick answer. Verified senders make impersonating a real brand over RCS much harder than over SMS, reducing phishing. Users should still be cautious with unexpected links; the verification badge is the signal that a brand message is genuine.

Industry Use Cases

Restaurants

How do restaurants use RCS?

Quick answer. Restaurants use RCS for branded reservation and order confirmations, time-sensitive offers with imagery and an order button, waitlist updates, loyalty, and two-way questions — all in the native inbox. Subway saw conversion well above SMS on an RCS offer test.

Related: Restaurant ordering with RCS

What are restaurant loyalty programs with RCS?

Quick answer. RCS lets restaurants run loyalty from the inbox: diners enroll by keyword or QR, earn points or visits, get a tappable rewards card, and redeem in one tap — reaching every regular, not just app installers.

Related: Can RCS replace a loyalty app?

How does restaurant ordering with RCS work?

Quick answer. Restaurants send menu carousels, one-tap reorder of a usual, and links to checkout or reservations, turning a promotion into an order inside the conversation, with SMS fallback for non-RCS diners.

Retail & e-commerce

How does retail use RCS?

Quick answer. Retailers use RCS for product showcases, promotions, order and shipping updates, back-in-stock alerts, abandoned-cart recovery, and loyalty — with carousels and buy buttons. Club Comex reported +115% revenue moving a loyalty club from SMS to RCS.

Related: RCS for e-commerce

What are retail promotions with RCS?

Quick answer. Branded carousels of products and offers with imagery, prices, and Shop-now buttons — storefront-quality promotions delivered in the inbox, with verified branding and full engagement analytics.

How is RCS used for e-commerce?

Quick answer. For order confirmations, real-time shipping updates with tracking, back-in-stock alerts, and abandoned-cart recovery — rich, actionable messages that drive repurchase, with SMS fallback.

How does abandoned-cart recovery work with RCS?

Quick answer. A branded RCS card shows the exact product image with a limited-time incentive and a one-tap checkout button, recovering carts that plain SMS or email often miss.

Healthcare

How does healthcare use RCS?

Quick answer. Healthcare uses RCS for appointment reminders, patient communications, and prescription notifications — with a verified sender patients trust and one-tap confirm/reschedule. It cuts no-shows and call volume. Follow HIPAA and consent rules.

Related: Is RCS HIPAA compliant?

How do RCS appointment reminders work?

Quick answer. Branded reminders include one-tap Confirm/Reschedule buttons integrated with scheduling or EHR systems, so the calendar updates automatically — reducing no-shows versus plain SMS.

What are RCS patient communications?

Quick answer. Pre-visit instructions, intake links, post-visit follow-ups, and care reminders — timely, branded, and easy to act on — while avoiding sensitive clinical detail since business RCS isn't end-to-end encrypted.

How do prescription notifications work with RCS?

Quick answer. Pharmacies send ready-for-pickup alerts with directions and a one-tap refill request, branded and verified so patients trust and act on them.

Financial services

How does financial services use RCS?

Quick answer. Banks and lenders use RCS for fraud alerts, account and payment notifications, OTPs, and loan servicing — with verified senders that counter SMS phishing and one-tap actions. BankBazaar saw +130% engagement; OneSource improved debt-payment rates 30%.

Related: Fraud alerts with RCS

How do RCS fraud alerts work?

Quick answer. A verified bank sends a real-time was-this-you alert with one-tap Confirm/Freeze-card/Contact-us buttons. Because the sender is verified, customers trust it — unlike easily-spoofed SMS fraud texts.

What are RCS account notifications?

Quick answer. Balance updates, payment-due reminders, and statement-ready alerts with a secure pay-now or view-statement button, branded and verified.

How is RCS used for loan servicing?

Quick answer. Payment-plan management, dispute and extension requests, and self-service that reduce call-center load while improving payment rates — OneSource reported a 30% improvement using interactive RCS.

Travel & hospitality

How does travel use RCS?

Quick answer. Airlines, hotels, and travel brands use RCS for booking confirmations, boarding passes, flight/gate updates, hotel check-in, and upsells — rich, timely, one-tap messages. EaseMyTrip saw 4x the click-through of email on an RCS campaign.

Related: Flight updates with RCS

How do boarding passes work with RCS?

Quick answer. A scannable boarding pass or ticket is delivered inside the chat (supported by RCS transactional agents), always to hand in the inbox.

How do RCS flight updates work?

Quick answer. Real-time gate, delay, and rebooking alerts with a one-tap rebook or view-options button when plans change, branded and verified.

How does hotel check-in work with RCS?

Quick answer. Booking confirmations, mobile-key and check-in flows, add-on upsells (breakfast, late checkout), and directions — all in one branded thread.

Automotive

How does automotive use RCS?

Quick answer. Dealerships and automakers use RCS for service reminders, recall notifications, vehicle alerts, test-drive follow-ups, and new-model showcases — with how-to videos and one-tap scheduling. A vendor reports ~3x engagement and ~30% higher conversion vs SMS.

Related: Service reminders with RCS

How do RCS service reminders work?

Quick answer. A reminder that a vehicle is due for service includes a how-to video, current offers, and a one-tap Book-service button wired to the dealership's scheduler.

How do RCS recall notifications work?

Quick answer. Targeted, branded recall alerts with clear instructions and an interactive scheduler to book the free fix — improving completion of safety-critical work.

What are RCS vehicle alerts?

Quick answer. Status and ready-for-pickup alerts with itemized cost and a pay/pickup button, plus test-drive follow-ups and new-model carousels for leads.

Real estate

How does real estate use RCS?

Quick answer. Agents use RCS for new-listing promotions, property tours, lead nurturing, and scheduling — image carousels of properties with one-tap Book-a-tour, Request-info, and Get-directions buttons. Speed-to-lead makes inbox-native, one-tap booking especially effective.

Related: Lead nurturing with RCS

How do RCS property tours work?

Quick answer. Carousels of property photos with Book-a-tour, Request-info, and Get-directions buttons — a mini-listing inside the chat that lets a prospect act instantly.

How does RCS lead nurturing work?

Quick answer. Timely, branded follow-ups with new matches and price changes keep an agent top-of-mind without an app or portal login — critical when speed-to-lead decides who wins the client.

How does appointment scheduling work with RCS?

Quick answer. One-tap viewing and consultation booking, with reminders that cut no-shows for showings and open houses.

Loyalty Programs

Questions

Can RCS replace a loyalty app?

Quick answer. For most businesses, RCS can replace the everyday functions of a loyalty app — enrolling members, showing points, sending offers, redeeming rewards — with no download. Apps still do more for power users, but most customers never install one, so RCS often wins on reach and participation.

Related: Mobile app vs RCS loyalty

How can RCS increase loyalty engagement?

Quick answer. By putting the program where customers already look — the inbox — and making it one-tap: check a balance, redeem a reward, claim an offer. It attacks the activation gap; redeemers spend ~3.1x more, yet ~$10B in US rewards goes unredeemed yearly.

Related: Digital rewards via RCS

What are RCS loyalty program examples?

Quick answer. Common patterns: enroll by keyword, points updates, reward alerts with a Redeem button, personalized offers, and expiry nudges. Real brands include Subway (RCS offers) and Club Comex (loyalty club moved SMS to RCS, +115% revenue).

Related: Restaurant loyalty through RCS

Mobile app vs RCS loyalty — which is better?

Quick answer. An app offers the deepest experience but only reaches customers who install and keep it; RCS reaches everyone in the inbox with no install, covering the core loyalty loop. Apps win on depth for power users; RCS wins on reach and activation.

Related: Can RCS replace a loyalty app?

Push notifications vs RCS for loyalty — which is better?

Quick answer. Push reaches only members who installed your app and left notifications on; RCS reaches the inbox with no app. Use push to nudge engaged app users, and RCS to reach and activate the majority who never install.

How do digital rewards work via RCS?

Quick answer. Rewards — coupons, free items, codes, vouchers — arrive as a branded card with a one-tap redeem button, redeemable in store or online without leaving the chat, which lifts the redemption rates that drive loyalty revenue.

Related: Loyalty points through RCS

How do loyalty points work through RCS?

Quick answer. Members enroll by keyword or QR, earn points on purchases, get instant balance updates, and redeem via tap-to-act buttons — all from the inbox, wired to a brand's loyalty or POS system through the API.

How does restaurant loyalty work through RCS?

Quick answer. Diners enroll by keyword or QR at the table, earn points or visits automatically, get a tappable rewards card, and receive timely offers — reaching every regular, not just app installers.

Related: How do restaurants use RCS?

Thought leadership

Why do most loyalty apps fail?

Quick answer. Mostly because customers never adopt the app — around 71% abandon apps within 90 days, and people resist installing yet another one. A loyalty program that lives only in an app reaches a small, shrinking slice of the base; the reward economics work, the distribution doesn't.

What is the hidden cost of loyalty apps?

Quick answer. Beyond build cost: ongoing maintenance across iOS/Android, app-store fees, security upkeep, and perpetual marketing to drive installs — plus the lost value of every member who never installs. Unredeemed rewards (~$10B/year in the US) compound the waste.

What is app fatigue?

Quick answer. App fatigue is consumers' growing resistance to downloading, opening, and paying for more apps — 22% feel overwhelmed by how many they have. It gives channels that need no download, like RCS in the native inbox, a structural advantage.

Related: Why do most loyalty apps fail?

Is RCS the next-generation loyalty channel?

Quick answer. Many argue yes — RCS combines the reach of texting with the experience of an app inside the inbox: verified branding, points, tappable rewards, and two-way conversation for the whole member base, with everything measurable and no download.

Related: Can RCS replace a loyalty app?

Do loyalty apps have high abandonment?

Quick answer. Yes — roughly 71% of users abandon apps within 90 days and many never return after first use, which is why app-only loyalty reaches a fraction of members and RCS's no-install reach matters.

How much of loyalty rewards go unused?

Quick answer. An estimated $10 billion in US loyalty rewards goes unredeemed each year, and only about half of loyalty memberships are actively used — a redemption-and-activation gap RCS is well suited to close.

Cost & Pricing

Pricing

How much does RCS cost?

Quick answer. RCS is priced per message by type: basic branded text is about the same as SMS (around $0.008 at one major provider), and rich media costs more (roughly $0.0165–$0.022). On top sit per-message carrier surcharges, registration/vetting fees, a platform fee, and taxes.

Related: RCS pricing explained

How is RCS priced?

Quick answer. In five layers: the message rate (by type), per-message carrier surcharges, Campaign Registry registration/vetting fees, the provider's platform fee, and telecom taxes. Your true cost is all five — most providers quote only one.

Related: What affects RCS pricing?

How does RCS pricing compare to SMS?

Quick answer. Basic RCS costs about the same as SMS per message; rich RCS costs more. But RCS's far higher click-through and conversion usually lower the cost per result, so judge on cost per outcome, not per message.

Related: RCS vs SMS pricing

How do I calculate RCS ROI?

Quick answer. ROI = (incremental revenue − all-in cost) / all-in cost. Estimate revenue as audience x delivery rate x click-through x conversion x average order value, then subtract the itemized all-in cost (messages, carrier fees, platform, taxes).

Related: What is the ROI of RCS?

How much does an RCS campaign cost?

Quick answer. Messages x per-message rate for the type, plus carrier surcharges, a share of platform fee and one-time registration, plus taxes. A 50,000 rich-media campaign at ~$0.02 is about $1,000 in message cost before surcharges and taxes.

What affects RCS pricing?

Quick answer. Message type (basic vs rich media), volume/discounts, the destination carrier's surcharge, region, and the provider's fee structure — setup, per-sender, and feature fees often move the bill more than the headline rate.

Related: How is RCS priced?

Is RCS more expensive than SMS?

Quick answer. Per message, basic RCS is comparable to SMS and rich RCS costs more — but because RCS converts much better, the effective cost per click or conversion is often lower than SMS.

Are there hidden fees in RCS?

Quick answer. There can be — setup/activation fees, per-RCS-sender fees, feature or per-seat tiers, and registry and carrier surcharges. A transparent provider itemizes every fee and tax so the quote matches the invoice.

Related: Questions to ask an RCS vendor

What are carrier surcharges for RCS?

Quick answer. Per-message fees each US carrier (Verizon, AT&T, T-Mobile, UScellular) charges on business traffic, passed through on top of the message rate — non-negotiable and roughly $0.003–$0.005 per message.

What are 10DLC and Campaign Registry fees?

Quick answer. US A2P registration fees: a brand registration fee (~~$4.50), brand vetting (~~$41.50; enhanced ~$95), per-campaign vetting ($15), and a monthly campaign fee ($1.50–$10) — pass-through charges set by The Campaign Registry.

Procurement

How do I choose an RCS provider?

Quick answer. Weigh transparent all-in pricing, what's actually included (inbox, bots, analytics, fallback, support), US carrier and sender-approval support, reliability with SMS fallback, and support quality — compare total cost and capabilities, not just the per-message rate.

Related: RCS vendor comparison

How do I compare RCS vendors?

Quick answer. On pricing transparency, included features, US carrier coverage, reliability/fallback, developer experience, and support. Global aggregators offer breadth; specialists may bundle more at a flat rate. Match the vendor to your needs.

Related: Best RCS providers

What questions should I ask an RCS vendor?

Quick answer. Is the quote all-in and will the invoice match it? Are carrier fees and taxes passed through and itemized? Any setup or per-RCS-sender fees? Is the inbox/fallback included? Do you charge more for the API than the app? Who handles carrier approval, and how fast?

What is an enterprise RCS buying guide?

Quick answer. Evaluate total cost of ownership, scalability/SLAs, security and compliance (TCPA/CTIA), integration, and support — not price alone. Require itemized all-in invoicing in a paid pilot, then scale with deliverability and ROI monitoring.

Does RCS have setup fees?

Quick answer. It depends on the provider — some charge activation or per-sender fees, others bundle setup. Always ask whether setup, sender, and feature fees apply; SimplyRCS bundles setup into its flat $250/month per RCS Agent, with no separate platform fee.

Is there a minimum spend for RCS?

Quick answer. Most providers have minimums or platform fees. SimplyRCS charges a flat $250/month per RCS Agent (your verified sender) with no separate platform fee; messaging is billed at carrier rates on top, fully itemized.

Do I pay more for the API than the app?

Quick answer. With some providers, yes — features can be gated. SimplyRCS prices the full API and the app the same, with every feature included.

Competitor Comparisons

Head-to-head

SimplyRCS vs Twilio — what's the difference?

Quick answer. Twilio is the largest CPaaS — vast global reach, deep APIs, priced per feature, no built-in inbox. SimplyRCS is the focused US alternative: every channel and feature included, carrier-rate pricing, transparent billing, and hands-on US carrier approval. Twilio for global building blocks; SimplyRCS for an all-included US package.

Related: Best RCS providers

SimplyRCS vs Sinch — what's the difference?

Quick answer. Sinch is a global enterprise leader with strong carrier relationships and custom volume pricing. SimplyRCS is US-focused and everything-included with transparent, carrier-rate pricing and faster, hands-on onboarding. Sinch for global scale; SimplyRCS for simple, all-in US messaging.

SimplyRCS vs Infobip — what's the difference?

Quick answer. Infobip is a global omnichannel CPaaS and CX suite sold via custom quote. SimplyRCS is the US-only alternative with everything included at carrier rates and transparent billing. Infobip for a global multi-channel platform; SimplyRCS for simple, predictable US RCS.

SimplyRCS vs MessageBird (Bird) — what's the difference?

Quick answer. MessageBird rebranded to Bird, a broad customer-engagement platform (SMS, WhatsApp, RCS, email, social) with automation. SimplyRCS is focused US messaging, everything included at carrier rates with transparent billing. Bird for an omnichannel CX platform; SimplyRCS for simple US RCS.

SimplyRCS vs Vonage — what's the difference?

Quick answer. Vonage (Ericsson-owned) offers an omnichannel Messages API plus unified communications, with global reach. SimplyRCS is US-focused, everything-included, with carrier-rate transparent pricing and hands-on approval. Vonage for omnichannel plus voice/UC; SimplyRCS for simple all-in US messaging.

Is SimplyRCS better than Twilio?

Quick answer. Neither is universally better — it depends on needs. Twilio wins on global reach and breadth; SimplyRCS wins for US-focused businesses wanting everything included, carrier-rate pricing, transparent billing, and hands-on carrier approval.

Landscape

Who are the best RCS providers?

Quick answer. It depends on needs: Twilio (deepest ecosystem), Sinch and Infobip (global enterprise), Vonage and Bird (omnichannel/CX), Telnyx (developer infrastructure), and SimplyRCS (US-focused, all-included, transparent pricing). Match the provider to your reach and transparency priorities.

Related: Best RCS platforms

What are the best RCS platforms?

Quick answer. Twilio, Sinch, and Infobip for global scale; Bird and Infobip for omnichannel engagement; Telnyx and Bandwidth for infrastructure control; SimplyRCS for US-focused messaging with everything included and transparent, carrier-rate pricing. Evaluate on reach, features, transparency, and support.

What is the best enterprise RCS platform?

Quick answer. For large global enterprises the established CPaaS platforms lead — Twilio, Sinch, Infobip, Vonage, Bird — on reach, breadth, and SLAs. SimplyRCS fits US-focused organizations wanting all-included, carrier-rate, transparently-billed messaging.

Related: What is an enterprise RCS buying guide?

What are alternatives to Twilio for RCS?

Quick answer. Alternatives include Sinch and Infobip (global enterprise), Vonage and Bird (omnichannel), Telnyx and Bandwidth (infrastructure), and SimplyRCS (US-focused, all-included, transparent pricing). The right choice depends on reach, breadth, and pricing transparency.

What is the best RCS provider for US businesses?

Quick answer. US-focused businesses that want every channel and feature included, carrier-rate pricing, transparent itemized billing, and hands-on US carrier approval are a strong fit for SimplyRCS; the global aggregators remain options for multi-country needs.

Which RCS provider is the cheapest?

Quick answer. Headline rates vary (Telnyx and Plivo compete on low SMS price; basic RCS tracks SMS), but the cheapest headline isn't the cheapest total once setup, per-sender, and feature fees are added — compare all-in, itemized cost.

Related: Are there hidden fees in RCS?

Future of Messaging

Thought leadership

Is SMS dead?

Quick answer. No — SMS is being upgraded, not replaced. It remains the most universal channel (around 98% open rates, every device) and the guaranteed fallback beneath RCS. The future is RCS-first with SMS fallback, where SMS underpins everything rather than disappearing.

Related: Is RCS replacing SMS?

What is the future of business messaging?

Quick answer. Branded, interactive, AI-assisted, and transactional — two-way conversations in the native inbox. RCS carries that shift, and Universal Profile 4.0 (2026) adds video calls, rich text, and streaming video, pushing messaging toward a super-app surface.

Related: Why RCS matters

Why does RCS matter?

Quick answer. Because it fixes business messaging's trust and richness gaps just as messaging becomes the primary brand-to-customer interface — and it's the trusted, rich, near-universal channel where AI agents and conversational commerce will live.

Related: What problem does RCS solve?

How do RCS and AI agents work together?

Quick answer. RCS is an ideal home for AI agents — native, verified, rich, two-way, near-universal. An AI agent can understand requests, offer suggested replies/actions, complete tasks, and hand off to a human, all in the inbox. Verified senders make this trustworthy at scale.

Related: What is an RCS chatbot?

What is RCS and conversational commerce?

Quick answer. Conversational commerce in RCS hosts the whole purchase journey in one branded thread — discover via carousel, ask an AI agent, add to cart, confirm, pay, track, and get support — collapsing the funnel and reducing drop-off.

Related: How does retail use RCS?

How does RCS change customer service?

Quick answer. It turns support into a branded, two-way, partly self-service conversation — suggested actions and AI resolve routine issues, humans take complex ones, and Universal Profile 4.0 enables escalation to video. Results include fewer calls and faster resolution.

How does RCS improve customer engagement?

Quick answer. By meeting people in their most-read channel with branded, visual, interactive, timely content — higher open, click, and conversion than SMS or email — and reaching the whole audience, including the majority who never install an app.

How does RCS support digital transformation?

Quick answer. It modernizes customer communication without forcing customers to adopt anything new — consolidating fragmented outreach into one branded, measurable, API-integrated, AI-ready channel that reaches everyone in the native inbox.

What will RCS look like in 2030?

Quick answer. Likely the default for business messaging in supported markets, with SMS as pure fallback — near-universal reach, standard P2P encryption, AI agents handling routine conversations, conversational commerce normalized, and video/rich formatting common. This is a projection, not a certainty.

What is Universal Profile 4.0?

Quick answer. The GSMA RCS standard finalized March 26, 2026, headlining Messaging-Initiated Video Calls plus rich-text formatting and streaming video in rich cards. Rollout to phones depends on carriers and device makers.

Related: What is Universal Profile?

Extended Question Bank

Additional long-tail questions, grouped by cluster.

More — RCS Fundamentals

Is RCS new?

Quick answer. Not entirely — the GSMA agreed the RCS Universal Profile in 2016 and carriers rolled it out over years. It reached the mainstream after Apple added support in iOS 18.1 (late 2024), which made it near-universal on modern phones.

When did RCS launch?

Quick answer. RCS has existed since the 2010s (the GSMA Universal Profile dates to 2016), but it became near-universal only after Apple added RCS to iPhone with iOS 18.1 in late 2024.

When did Apple add RCS?

Quick answer. Apple added RCS to the iPhone Messages app with iOS 18.1 in late 2024, and added default cross-platform end-to-end encryption with iOS 26.5 in May 2026.

Who created RCS?

Quick answer. RCS is an open standard created and maintained by the GSMA (the global mobile operators' association). Google built the dominant backend (Jibe) and Google Messages app; carriers and, later, Apple implemented support.

Does RCS replace iMessage?

Quick answer. No — iMessage remains Apple's service for Apple-to-Apple chats. RCS handles messages between iPhone and Android and business messages. On an iPhone, Apple-to-Apple stays iMessage; cross-platform uses RCS.

Does RCS work on tablets?

Quick answer. RCS works on phones with a mobile number and supported messaging app. Most tablets without cellular service don't support RCS natively, though some linked-device setups can mirror messages.

Does RCS work without a SIM?

Quick answer. RCS is tied to a phone number and carrier registration, so it generally needs an active line. Wi-Fi-only devices without a number typically can't register for RCS.

Does RCS use my phone number?

Quick answer. Yes — RCS is tied to your mobile number, like SMS. That's why it works in your default texting app and falls back to SMS on the same number.

Why do some contacts show RCS and others don't?

Quick answer. Because RCS is used only when the other person can receive it. Contacts on RCS-capable devices and carriers chat over RCS; others fall back to SMS, so you see a mix.

Related: Why are some of my messages RCS and others SMS?

Can I tell if someone has RCS?

Quick answer. Often yes — RCS chats show features like typing indicators and read receipts, and the app may label the chat as RCS or chat features. If those appear, the conversation is using RCS.

Does RCS work over 5G?

Quick answer. Yes — RCS works over any internet connection, including 5G, 4G/LTE, or Wi-Fi, since it's IP-based.

Is RCS better than SMS?

Quick answer. For most business and rich messaging, yes — RCS adds branding, media, interactivity, and analytics with higher engagement. SMS still wins on universal reach and is the fallback, so the best approach uses both.

Does RCS work in group chats?

Quick answer. Yes — RCS supports group chats with richer features than SMS group texts among participants who have RCS; others in the group may receive messages via SMS/MMS fallback.

What is the history of RCS?

Quick answer. RCS began as a GSMA initiative in the late 2000s, gained the unifying Universal Profile in 2016, scaled via Google's Jibe and Google Messages, and reached the mainstream when Apple added support in 2024.

More — Business RCS

Does RCS increase sales?

Quick answer. It can — RCS's higher click-through and conversion versus SMS, plus one-tap buy and redeem actions, lift sales for fitting use cases. Results vary by audience and offer; measure cost per outcome, not per message.

Can RCS be used for OTPs and 2FA?

Quick answer. Yes — a dedicated OTP agent type sends one-time passcodes. RCS's verified sender reduces phishing risk; keep OTP messages minimal and treat the code as sensitive.

Can RCS do two-way conversations?

Quick answer. Yes — RCS is natively two-way: customers can reply, tap suggested replies/actions, and converse with a bot or human, with messages and taps flowing back via webhook.

How long does RCS approval take?

Quick answer. It varies — brand and campaign registration plus sender verification through Google and carriers can take from days to a few weeks. A provider that manages carrier approval (like SimplyRCS) speeds it up.

Can I keep my existing number with RCS?

Quick answer. Business RCS uses a verified agent identity rather than a personal number; your existing business numbers can still be used for SMS/MMS fallback. A provider configures the sender and fallback for you.

What are common RCS use cases?

Quick answer. Order and delivery updates, appointment reminders, OTPs, promotions and offers, loyalty, fraud alerts, customer support, and surveys — anything that benefits from branding, rich content, or one-tap actions.

Can RCS be used for surveys?

Quick answer. Yes — RCS supports interactive surveys with suggested replies and buttons, making it easy for customers to respond in one tap, with results captured via webhook.

Does RCS reduce support costs?

Quick answer. Often — self-service via suggested actions and AI agents deflects routine queries and speeds resolution. One financial-services provider reported 42% fewer calls and 300% faster resolution after moving support to RCS.

Is RCS good for marketing?

Quick answer. Yes — branded carousels, rich offers, and high click-through make RCS strong for marketing, with explicit opt-in and a promotional use case required, plus SMS fallback.

Can nonprofits and government use RCS?

Quick answer. Yes — any organization that messages people and can register a brand, verify a sender, and obtain consent can use RCS for alerts, reminders, and updates.

More — Technical RCS

What languages can I use with the RCS API?

Quick answer. Any language that can make HTTPS requests — the RCS API is REST/JSON. Providers commonly offer SDKs or examples for Node.js, Python, Java, PHP, Ruby, C#, and Go.

How do I check if a number supports RCS?

Quick answer. Use the provider's capability check before sending; it returns whether the destination can receive RCS. If not, send via SMS/MMS instead.

Related: How does RCS routing work?

What is a capability check?

Quick answer. A capability check asks the RCS backend whether a destination number can receive RCS before you send, so you deliver richly when possible and fall back to SMS when not.

What media types does RCS support?

Quick answer. RCS supports high-resolution images, GIFs, video, and PDFs, plus rich cards and carousels — well beyond SMS text or compressed MMS media.

Can RCS send PDFs?

Quick answer. Yes — RCS can send PDF files (and other media) natively, useful for receipts, statements, boarding passes, and documents.

How do I handle inbound RCS messages?

Quick answer. Configure a webhook to receive inbound messages and events; verify each request, read the payload (text or suggestion postbackData), and respond with a 200.

Related: What is an RCS webhook?

How do I authenticate to the RCS API?

Quick answer. Via the provider's credentials — typically API keys (scoped and rotated) sent with each request, and signed webhooks to verify inbound events. Never expose keys client-side.

What is an agent ID?

Quick answer. An agent ID is the identifier for your verified RBM agent, included in API send calls so messages are sent from the correct branded sender.

Related: What is an RBM agent?

What is the difference between a brand and a campaign in RCS?

Quick answer. A brand is your registered legal business identity; a campaign is a registered, approved messaging use case (marketing, alerts, support) under that brand. Both are required to send.

Can I schedule RCS messages?

Quick answer. Yes — most RCS platforms let you schedule sends and set delivery windows via the API or app, alongside immediate sends.

Does RCS have an SDK or emulator?

Quick answer. Providers commonly offer SDKs and an emulator/validator so you can build and test message payloads and rendering without using live carrier quota.

Can RCS integrate with my CRM?

Quick answer. Yes — via API and webhooks, CRMs and other systems (Salesforce, HubSpot, Zoho, POS, EHR) can trigger RCS on events and receive replies and delivery data.

More — Carrier & Ecosystem

Does Cricket support RCS?

Quick answer. Yes — Cricket (an AT&T prepaid brand) supports RCS, typically via Google Messages on Android.

Does Google Fi support RCS?

Quick answer. Yes — Google Fi supports RCS through Google Messages.

Does Boost support RCS?

Quick answer. Yes — Boost is among the prepaid brands that support RCS via Google Messages.

Does Xfinity Mobile support RCS?

Quick answer. Yes — Xfinity Mobile is among the MVNOs supporting RCS via Google Messages.

Do all Android phones support RCS?

Quick answer. Most modern Android phones support RCS via Google Messages, but it depends on the device, Android version, app, and carrier. Setting Google Messages as default enables it where supported.

What iOS version added RCS?

Quick answer. iOS 18.1 added RCS to the iPhone in late 2024; iOS 26.5 (May 2026) added default cross-platform end-to-end encryption.

Does RCS work on older iPhones?

Quick answer. RCS requires iOS 18.1 or later and a supporting carrier, so it works on iPhones that can run iOS 18.1+; older devices that can't update won't have RCS.

Does RCS work on Pixel phones?

Quick answer. Yes — Google Pixel phones support RCS through Google Messages, which is the default on Pixel.

When did US carriers add RCS?

Quick answer. US carriers rolled out RCS over several years; by the end of 2024 all three majors (AT&T, Verizon, T-Mobile) plus UScellular supported it, with T-Mobile having launched first.

How many countries support RCS?

Quick answer. Consumer RCS via Google Messages is available in most countries; business RCS spans a growing subset that depends on carriers and provider — dozens of countries and expanding.

Related: Which countries support RCS?

Does RCS work while roaming?

Quick answer. RCS works while roaming if you have a data connection and the visited network/your carrier support it; otherwise messages fall back to SMS.

Why doesn't my carrier show RCS?

Quick answer. Possible reasons: your plan or device isn't provisioned yet, RCS registration is pending, you're not using Google Messages, or your specific carrier hasn't enabled it — most major US carriers now do.

More — Compliance & Security

What is the TCPA?

Quick answer. The Telephone Consumer Protection Act — the US federal law governing automated calls and texts, including consent and opt-out rules. It's enforced by the FCC and through private lawsuits, and applies to RCS business messaging.

What is the CTIA?

Quick answer. The CTIA is the US wireless industry association whose Messaging Principles and Best Practices set consent, content, and opt-out standards for A2P messaging (SMS, MMS, and RCS), enforced by carriers.

What is 10DLC?

Quick answer. 10DLC (10-digit long code) is the US system for registered application-to-person SMS/MMS over standard local numbers; the underlying brand/campaign registration also supports RCS business messaging.

What is The Campaign Registry?

Quick answer. The Campaign Registry (TCR) manages US brand and campaign registration for A2P messaging, charging brand, vetting, and campaign fees that providers pass through.

What keywords must RCS support?

Quick answer. Opt-out keywords like STOP, QUIT, END, CANCEL, UNSUBSCRIBE, OPT OUT, and REVOKE must be honored, and HELP should return assistance/contact info — consistent with TCPA and CTIA.

What is double opt-in?

Quick answer. Double opt-in sends a confirmation message asking the user to reply YES to confirm their subscription, proving the number belongs to the person who signed up — a strong defense against fraudulent sign-ups.

Quick answer. No — marketing messages require prior express written consent. Sending without it risks TCPA liability, carrier blocking, and penalties.

Quick answer. RCS can be used in a GDPR-compliant way for EU contacts with proper consent, data minimization, a privacy policy, and honoring data-subject rights — compliance depends on how you run the program, not RCS itself.

Is RCS CCPA compliant?

Quick answer. Yes, when you follow CCPA/CPRA obligations — disclosure, honoring access/deletion and opt-out rights, and not selling data without notice. RCS is a channel; compliance depends on your data practices.

What are TCPA penalties?

Quick answer. TCPA allows statutory damages per violating message (commonly cited at $500, up to $1,500 for willful violations), so non-compliant campaigns can create significant exposure. Consult counsel.

How do I handle opt-outs in RCS?

Quick answer. Honor any reasonable revocation, treat standard keywords (STOP, etc.) as opt-outs, stop within 10 business days, send only one confirmation, and suppress opted-out contacts automatically.

Related: What are RCS opt-out requirements?

Is my RCS message content private?

Quick answer. Personal RCS chats are end-to-end encrypted; business RCS is encrypted in transit but processed by the platform (with metadata retained). Treat business message content like any other CRM data.

More — Industry Use Cases

How does logistics use RCS?

Quick answer. Shipping and logistics use RCS for delivery notifications with tracking, branded who's-delivering updates, and reschedule buttons — reducing where-is-my-order calls with rich, one-tap updates.

How does insurance use RCS?

Quick answer. Insurers use RCS for policy and renewal reminders, claims updates with document upload prompts, and verified communications that build trust on sensitive topics.

How do utilities use RCS?

Quick answer. Utilities use RCS for outage and maintenance alerts, usage notifications, and payment reminders — branded and interactive, with real-time updates and one-tap actions.

How does events and ticketing use RCS?

Quick answer. Event organizers use RCS to promote shows with media, sell tickets via buttons, and deliver digital passes and reminders inside the inbox.

How does education use RCS?

Quick answer. Schools use RCS for enrollment, schedule and closure alerts, payment reminders, and two-way parent communication with verified, branded messages.

How do gyms and fitness use RCS?

Quick answer. Fitness brands use RCS for class reminders with one-tap booking, membership renewals, and personalized offers — reaching members without an app.

How does government use RCS?

Quick answer. Government agencies use RCS for verified service notifications, appointment and benefit updates, and alerts — with the verified sender helping recipients trust official messages.

What is RCS for delivery notifications?

Quick answer. Branded delivery updates with live tracking, a who's-arriving photo, and reschedule/track buttons — richer and more trusted than plain SMS where-is-my-order texts.

Can RCS be used for appointment booking across industries?

Quick answer. Yes — reminders with one-tap Confirm/Reschedule and booking links work across healthcare, automotive, beauty, real estate, and services, integrated with scheduling systems.

How does beauty and personal care use RCS?

Quick answer. Salons and spas use RCS for appointment reminders, rebooking prompts, last-minute opening offers, and loyalty — visual and one-tap, in the inbox.

More — Loyalty Programs

Can I send digital coupons via RCS?

Quick answer. Yes — RCS delivers branded coupons and codes as rich cards with a one-tap redeem button, redeemable in store or online, which lifts redemption versus buried app or email coupons.

Can RCS send birthday and milestone rewards?

Quick answer. Yes — personalized, timed rewards (birthday, anniversary, milestone) sent as branded cards with a redeem button perform well in the inbox where people actually see them.

How do I enroll loyalty members via RCS?

Quick answer. Customers enroll by texting a keyword or scanning a QR code, then receive a confirmation and a tappable rewards card — no app or sign-up form required.

How do I re-engage lapsed members with RCS?

Quick answer. Send a branded win-back offer or points-expiry nudge with a one-tap action; because RCS reaches the inbox even members who left your app see it.

Does RCS work for tiered loyalty programs?

Quick answer. Yes — RCS can communicate tier status, progress to the next tier, and tier-specific perks with rich, personalized messages, wired to your loyalty system via API.

Is RCS cheaper than running a loyalty app?

Quick answer. Often — RCS removes app build, maintenance, and install-acquisition costs, replacing fixed app overhead with a measurable per-message channel that reaches the whole base.

Related: What is the hidden cost of loyalty apps?

More — Cost & Pricing

How is RCS billed?

Quick answer. Typically per message by type (basic text vs rich media), plus per-message carrier surcharges, registration fees, a platform fee, and taxes. Some providers/markets also bill per conversation session.

Do businesses pay to receive RCS?

Quick answer. Businesses are billed primarily for outbound messages and platform fees; inbound handling is usually included, though specifics vary by provider — check the pricing terms.

Are RCS carrier fees negotiable?

Quick answer. No — per-message carrier surcharges are set by the carriers and passed through unchanged. A transparent provider itemizes them rather than marking them up.

Related: What are carrier surcharges for RCS?

How do RCS volume discounts work?

Quick answer. Higher monthly volume typically earns lower per-message rates, negotiated with the provider. Real contract rates at high volume can run meaningfully below list pricing.

What taxes apply to RCS?

Quick answer. US telecom taxes can include the federal Universal Service Fund (USF), state USF, E911/988, and state/local communications taxes — layered and varying by jurisdiction. A transparent provider estimates and itemizes them.

Related: What is the RCS market size?

Why is my RCS bill higher than the quote?

Quick answer. Usually because the quote showed only the message rate, while the bill adds carrier surcharges, registration fees, and telecom taxes. An itemized, all-in quote prevents this surprise.

Related: Are there hidden fees in RCS?

Is there a free RCS trial?

Quick answer. Some providers offer trials or free test credits to build and send sample messages. Availability varies — ask the provider about a pilot before committing.

What is the cheapest way to send RCS?

Quick answer. Send mostly basic branded text (cheaper than rich media), commit to volume for discounts, and choose a provider with transparent all-in pricing and no setup/per-sender fees — the lowest headline rate isn't always the lowest total.

More — Competitor Comparisons

SimplyRCS vs Telnyx — what's the difference?

Quick answer. Telnyx is a developer/infrastructure provider that owns its network and competes on low rates and control, now with an RCS API. SimplyRCS is US-focused, all-included, and transparently priced with hands-on carrier approval. Telnyx for low-level control; SimplyRCS for a complete US package.

SimplyRCS vs Bandwidth — what's the difference?

Quick answer. Bandwidth is a network-level provider strong in voice and messaging infrastructure. SimplyRCS is a focused US RCS product with everything included and transparent billing. Bandwidth for infrastructure; SimplyRCS for an all-in messaging solution.

SimplyRCS vs Plivo — what's the difference?

Quick answer. Plivo competes on low-cost SMS with a leaner feature set. SimplyRCS focuses on US RCS with all channels and features included and transparent pricing. Plivo for budget SMS; SimplyRCS for rich, all-included RCS.

What is the best Twilio alternative for RCS?

Quick answer. Alternatives include Sinch and Infobip (global enterprise), Vonage and Bird (omnichannel), Telnyx and Bandwidth (infrastructure), and SimplyRCS (US-focused, all-included, transparent). The best fit depends on reach and pricing-transparency needs.

Related: What are alternatives to Twilio for RCS?

What is the best RCS API?

Quick answer. The best RCS API depends on needs — Twilio for breadth, Telnyx for low-level control, and providers like SimplyRCS for US-focused, all-included messaging via API (priced the same as the app). Compare on capability, transparency, and support.

What is the best RCS platform for small business?

Quick answer. SMBs usually want simplicity and predictable pricing — an all-included, transparent provider like SimplyRCS fits well, while larger aggregators suit complex or multi-country needs.

Related: Can small businesses use RCS?

Is there an RCS provider focused on the US?

Quick answer. Yes — SimplyRCS is built specifically for the US market: US carrier relationships, hands-on approval, all channels and features included, carrier-rate pricing, and transparent billing.

Related: What is the best RCS provider for US businesses?

More — Future of Messaging

Will RCS replace WhatsApp?

Quick answer. Unlikely to replace it globally — WhatsApp dominates many international markets, while RCS leads in native-inbox markets like the US. They'll coexist, and many brands use both.

Will RCS get video calls?

Quick answer. Universal Profile 4.0 (finalized March 2026) introduces Messaging-Initiated Video Calls, letting users start a video call from a chat. Availability depends on carrier and device rollout.

Related: What is Universal Profile 4.0?

Will AI agents use RCS?

Quick answer. Increasingly yes — RCS is a natural channel for AI agents because it's native, verified, rich, and two-way, letting agents converse, act, and hand off to humans in the inbox.

Related: How do RCS and AI agents work together?

Will RCS support payments?

Quick answer. RCS already supports rich purchase journeys with buy buttons and links, and conversational commerce is expanding; deeper in-thread payment experiences are a likely direction as the standard and ecosystem evolve.

Is RCS a super-app?

Quick answer. Not yet, but it's heading that way — with branding, commerce, AI, service, and (via Universal Profile 4.0) video, RCS is evolving into an all-purpose engagement surface inside the inbox.

Will RCS replace email?

Quick answer. No — they're complementary. RCS wins on immediacy and engagement; email on long-form content, attachments, and archiving. Most businesses use both.

Is RCS the future of marketing?

Quick answer. It's a major part of it — branded, interactive, measurable messaging in the most-read channel, increasingly AI-assisted — alongside other channels rather than replacing them entirely.

What's next for RCS after Apple support?

Quick answer. Deeper encryption rollout, Universal Profile 4.0 features (video calls, rich text, streaming video), wider business adoption, and convergence with AI agents and conversational commerce.

Related: What is the future of business messaging?

RCS FAQ Library.

RCS Fundamentals

Basics

What is RCS?

What is RCS messaging?

What does RCS stand for?

What is Rich Communication Services?

What is RCS Business Messaging?

What is RBM?

Is RCS an app?

Is RCS the same as SMS?

Is RCS the same as texting?

How RCS works

How does RCS work?

Does RCS use the internet?

Does RCS use data or Wi-Fi?

Does RCS work without internet?

Does RCS fall back to SMS?

What happens if the recipient doesn't have RCS?

Who owns RCS?

What is the Universal Profile?

What is the Google Jibe platform?

Adoption & importance

Is RCS replacing SMS?

Is RCS replacing MMS?

Why is RCS important?

What are the benefits of RCS?

What problem does RCS solve?

How many people use RCS?

Is RCS the future of texting?

Features

Can RCS send pictures and videos?

Does RCS have read receipts?

Does RCS show typing indicators?

What is a verified sender?

What are suggested replies?

What are suggested actions?

What is a rich card?

What is a carousel?

What is the character limit for RCS?

Can you have group chats in RCS?

RCS vs other channels

What is the difference between RCS and SMS?

RCS vs MMS — what's the difference?

RCS vs WhatsApp — what's the difference?

RCS vs iMessage — what's the difference?

RCS vs email — which is better?

RCS vs push notifications — which is better?

RCS vs mobile apps — which is better?

RCS vs Facebook Messenger — which is better?

RCS vs in-app messaging — which is better?

Using RCS (consumer FAQs)

Is RCS free?

Do I need an app for RCS?

How do I turn on RCS?

How do I turn off RCS?

Why is my RCS not working?

Does RCS work between iPhone and Android?

What does the lock icon on an RCS message mean?

Is RCS safe?

Business RCS

Adoption

What businesses should use RCS?

Is RCS worth it?

What industries benefit from RCS?

How much does RCS improve engagement?

What is the ROI of RCS?

How does RCS improve customer experience?

Can small businesses use RCS?

Is RCS only for enterprises?

Strategy

When should I use RCS instead of SMS?

When should I use SMS instead of RCS?

Can I use both RCS and SMS?

How do I migrate from SMS to RCS?

What is an RCS-first strategy?

Does RCS work for marketing?

Is RCS good for customer support?

How do I get started with RCS?

Do I need opt-in to send business RCS?