Learn · every claim sourced
Understand CPaaS, step by step
Plain-language guides, use cases and research from the community, with a source for every claim. New here? Begin with the five short reads below.
The library
RCS 101: the phone's own messaging app, with a brand name and buttons
What RCS business messaging is, how a rich message reaches a phone and falls back to SMS when it cannot, what it costs, the approval and consent rules, and when the upgrade is worth it.
What RCS changed, and what it did not
Apple's adoption in iOS 18 turned a long-stalled standard into something with reach, and 2026 brought new versions and cross-platform encryption. Reach is still not the same as a business case.
Adding RCS to an SMS programme without running two programmes
Every RCS deployment is two deployments: the rich one and the SMS fallback. Designing the fallback first, checking capability at send time and measuring honestly keeps it from becoming a second programme.
RCS after iOS: what changed in the numbers, and what to distrust
Adoption figures for RCS are widely quoted and rarely defined. What can be said confidently, and what is being counted loosely.