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Signalmash

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11 reviews
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Average star rating
4.7
Serving customers since
2020
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Signalmash

11 reviews

Signalmash is a Communication Platform as a Service (CPaaS) provider offering a comprehensive suite of communication APIs for businesses. Our platform includes: SMS API: Empowers businesses with text alerting, two-factor authentication, SMS marketing, surveys, appointment reminders, and customer relationship building. Elastic SIP Trunking: Facilitates the setup of contact centers, custom call direction, and encrypted trunks for secure communication. Voice API: Enables businesses to integrate call making, receiving, and management into their existing applications. Large set of features to accommodate any business needs. VoIP PBX solutions: Signalmash also provides VoIP PBX solutions, allowing businesses to set up and manage their private branch exchange (PBX) systems for voice communication within their organizations. This includes features such as call routing, voicemail, conference calling, and more.

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SimplyRCS

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SimplyRCS is Signalmash's RCS Business Messaging platform for US brands. It sends verified, branded RCS messages with rich cards, carousels and suggested actions into the default Messages app on Android and iPhone, with automatic SMS and MMS fallback for handsets that cannot receive RCS. Marketing and operations teams build campaigns and AI-driven bots in a no-code builder, handle two-way conversations from a shared inbox, and measure delivery, reads and button taps in real time. Developers get a public REST API with 195 documented endpoints, signed webhooks and an MCP server. Signalmash handles brand registration, 10DLC, carrier vetting and Google RCS sender verification in-house, so a first verified US send typically takes two to four weeks, and numbers can be ported from an existing provider. Pricing is published: the platform is free, RCS or SMS text messages are $0.0039, messages with media are $0.0150, and each verified RCS agent is $250 per month, with carrier and registry fees passed through at cost. The service runs on direct Tier-1 US carrier connections (AT&T, Verizon, T-Mobile) and is SOC 2 Type II certified.

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Signalmash Reviews

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CD
Chaitanya D.
06/02/2026
Validated Reviewer
Review source: Organic

Clean APIs, real engineers on Slack, and no support black hole

As a backend engineer, I've worked with the majority of the major CPaaS vendors. The REST APIs offered by Signalmash are among the cleanest that I have encountered. Whatever stack you're on, you're covered thanks to OAuth 2.0, well-documented webhook signatures, and SDKs for Python, Node, Java, PHP, and.NET. It is indeed possible to use the sandbox environment for testing. The major differentiation, though, is the dedicated Slack channel. Instead of a tier-1 support representative reciting from a script when something doesn't function, I'm DMing an engineer who really wrote the code.
MW
Mukund W.
06/01/2026
Validated Reviewer
Verified Current User
Review source: Organic

RCS is a game-changer for our marketing campaigns

The RCS Multimedia tier is genuinely impressive. With the drag-and-drop campaign builder, our marketing team can now launch rich cards and interactive carousels without needing engineering support, which used to be a constant bottleneck. The 8000+ word limit, webview integration, and action buttons have also helped us revamp onboarding flows that previously required five separate SMS messages, consolidating them into a single rich card. Real-time analytics actually update in real time, and the built-in A/B testing is straightforward to set up and use.

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HQ Location:
Lake Oswego, US

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@signalmash

What is Signalmash?

Signalmash is a boutique CPaaS for SMS, Voice, RCS, and Identity, Tier-1 carrier connections (AT&T, Verizon, T-Mobile, Bandwidth) with white-glove support via a dedicated Slack channel for every customer. SimplyRCS (simplyrcs.ai) is our RCS Business Messaging product, offering two tiers: RCS Rich for verified transactional messaging, and RCS Multimedia with a drag-and-drop builder, carousels, rich cards, and analytics, reaching 1.2B+ devices on Android and iOS 18+. Compliance (STIR/SHAKEN, 10DLC, TCPA) handled for you.

Details

Year Founded
2020
Website
signalmash.com