Signalmash is a boutique Communications Platform as a Service (CPaaS) for SMS, Voice, RCS, and Identity built for brands that want carrier-grade infrastructure without the support black hole of larger providers. Every customer gets a dedicated Slack channel with Signalmash engineers, no tiered tickets, no paywalls. Core capabilities: Messaging APIs: 10DLC, Toll-Free, and Short Code SMS/MMS with Tier-1 carrier connections (AT&T, Verizon, T-Mobile, Bandwidth) RCS: Rich Communication Services platform with two tiers: - RCS Rich (Basic): verified sender, brand logo and badge, URL previews, read receipts, SMS fallback. Ideal for OTPs, transaction alerts, and appointment reminders. - RCS Multimedia: rich cards, carousels (up to 10 cards), up to 4 action buttons per card, drag-and-drop campaign builder, webview integration, advanced analytics, 8,000+ character messages. Ideal for product launches, interactive support, and booking flows. Voice & SIP Trunking: local and toll-free origination/termination, elastic scaling Phone Numbers: local, toll-free, and short codes with full porting support Identity: Branded Caller ID (CNAM), Number Intelligence, and the Signalmash Verifier for fraud prevention Communication Operations as a Service (CoaaS): Compliance, Billing, Taxation, KYC, Support, and Payments as managed services Combined RCS reach: 1.2+ billion devices on Android (Google Messages) and iOS 18+. Built for: developers (clean REST APIs, OAuth 2.0, webhooks, SDKs for Python, Node.js, Java, PHP, .NET, sandbox environment), marketing teams (no-code RCS campaign builder, A/B testing, real-time analytics), and enterprise brands (verified sender, dedicated account management, custom SLAs). Compliance built in: STIR/SHAKEN, 10DLC registration, TCPA Signalmash manages carrier approvals and policy enforcement on your behalf.