10 articles in this collection
Channel overview
Understand one phone identity across iMessage, RCS, and SMS service states.
Connect and provision a line
Activate a sending identity or retrieve an available number.
Capability checks
Check iMessage and RCS eligibility before choosing a rich message type.
Sender selection
Use automatic, pinned, selected, and excluded sending numbers predictably.
Service fallback
Define when a message may fall back and when the send must stop.
Native message features
Use voice memos, polls, stickers, effects, reactions, links, and app messages.
Contact cards and identity
Set, retrieve, update, and share contact cards for active numbers.
Line reputation
Start and retrieve audits, interpret restrictions, and protect line health.
Blocked handles and opt-outs
Block, list, and unblock phone numbers, emails, short codes, and sender IDs.
iMessage payments and experiences
Send payment requests and approved native experiences over eligible conversations.