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
Viber 101: branded messages where Viber is the everyday app
How Viber Business Messages, chatbots and business accounts work, how Rakuten Viber prices them, and which markets make Viber worth adding.
SMS 101: the text message every phone can receive
What SMS is, how a business text travels to a phone, what it costs, the registration and consent rules by region, and when plain text is still the right choice.
The state of business messaging, 2026
Four changes that landed between 2024 and 2026 (per-message WhatsApp billing, stricter sender registration, RCS on both major phone platforms, and AI disclosure) and what each one does to a programme built before them.
A2P, P2A, P2P: why the direction of a message decides everything about it
The same 160 characters are priced, routed, filtered and regulated differently depending on whether a person or a program pressed send — and on who wrote first.
10DLC registration without tears
US carriers now block unregistered business texts from ordinary ten-digit numbers. The process has two layers, takes longer than launch plans assume, and most rejections are avoidable.
Getting messages into the Gulf: sender IDs, licensed aggregators and the AD marker
Business messaging in the UAE and Saudi Arabia is a registration and licensing question before it is a technical one, and a global platform does not inherit local standing.
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.
Regional messaging in the Gulf: why global platforms can underperform here
A regional case study: four structural features of Gulf markets that a globally designed product does not automatically inherit, and that can decide outcomes more than software quality does.
GSMA on RCS, encryption and the future of operator messaging
A guide to the GSMA's own primary material on where operator-run messaging is heading, the standards body's account rather than a vendor's summary of it, and how to read it.