Getting an RCS agent approved to send has less to do with the API and more to do with configuration choices made before the first launch request — agent types, brand verification, and Google-managed vs carrier-managed tiers.
Sending a single message is straightforward. Ensuring reliable delivery of millions of messages presents a significant engineering challenge.
iMessage vs SMS for business messaging in 2026: read rates, cost, security, features, and deliverability compared — plus how to use both with automatic fallback.
iMessage vs RCS in 2026: open rates, deliverability, cost, and reach compared. See which channel actually wins for business messaging — and how to use both with automatic fallback.
Blooio's co-founders joined HighLevel's Spotlight Session to explain how to send real blue-bubble iMessage inside GoHighLevel workflows, why P2P beats A2P SMS, and how agencies are doubling response rates.
Cold SMS gets you reach; iMessage gets you replies. Hybrid mode sends cold outbound over A2P SMS, then automatically continues on a blue-bubble iMessage line the moment a lead replies — the scale of A2P with the conversation quality of P2P.