American. Telecom. Veterans.
SimplyRCS is a US-focused business-messaging platform built by Signalmash, a CPaaS with direct connections to AT&T, Verizon, T-Mobile, and US Cellular and a team carrying a century of combined telecom experience. We exist to make modern messaging, RCS, SMS, MMS, and everything between, simple, transparent, and genuinely supported for businesses that operate in America.
A brand of Signalmash, legally Mash Technologies Corporation.


Why SimplyRCS exists.
The technology to send a verified, branded, interactive text has existed for years, you just watched it work on our homepage. The reason most US businesses still send gray, anonymous SMS is not capability; it is the gauntlet.
We take the carrier relationships and infrastructure Signalmash already runs, and put them behind your launch.
See how carrier support stands todayWe wrap that infrastructure in a product a non-developer can use, and publish the pricing rather than quoting it.
Read the published ratesWe put a real person beside every launch, and the brand work is done for you before your first message goes out.
Start with a free sender ID testThe demo is the point.
Most messaging vendors describe what RCS could do. We let you operate it before you ever talk to us. The interactive simulator on our homepage runs on the same rendering our live campaigns use, which is the most honest thing a messaging company can do: show you the actual product, in your own industry, in ten seconds.
What we believe.
Three commitments, and what each one actually means once you are on the platform.
Pricing belongs on the website; carrier pass-through belongs on its own invoice line.
Every rate we charge is published, and the fees we do not set, carrier surcharges, registry charges and taxes, are passed through at cost on their own lines rather than blended into a single number.
See the rate cardEvery account gets the full platform from day one, no feature held hostage.
The app, the API, the bot builder, the shared inbox and analytics are the same on every account. There is no per-seat licence and no feature tier, so the software costs the same whether you send by code or by click.
See the platformThe people who answer your questions are the people who run the platform.
Onboarding, carrier approval and compliance are done with you by the team that operates the network, not handed to a queue. Support is included on every account rather than sold as a tier.
Talk to the teamBy the numbers.
Why US-only is a feature.
The American messaging landscape has its own rules.
Four carriers
AT&T, Verizon, T-Mobile and US Cellular, each with its own terms.
Carrier-managed RCS review
Every verified sender is reviewed by the carriers before it can send.
10DLC registration
Brand and campaign registration on top, before a single message goes out.
Frequently asked.
Is SimplyRCS the same company as Signalmash?
SimplyRCS is a product of Signalmash. Signalmash provides the carrier connections and infrastructure; SimplyRCS is the focused application and API for businesses adopting RCS and multi-channel messaging.
Where is SimplyRCS based?
The team operates in the United States and supports US businesses only.
Does SimplyRCS work outside the US?
No. SimplyRCS is built specifically for US carriers and US messaging regulation.
Do I work with a real person or a portal?
Both. You self-serve in the app and also get a dedicated channel to our team for onboarding, compliance, and support.
It starts with your brand on a real phone.
Every engagement starts the same way: a free sender ID test. We verify a test sender with your name and logo, put it on your team’s phones, and scope what you want to build, so the first thing you ever see from us is your own brand, verified, on a real device. No commitment, no card.