Apple Messages
Apple Messages for Business — inbound-first, brand-scoped, consent-gated.
A separate API from Linq V3: its own spec, SDK, credentials, and base URL
(https://messages.api.linqapp.com/v1).
How it differs from iMessage
Section titled “How it differs from iMessage”| iMessage (V3) | Apple Messages | |
|---|---|---|
| Identity | phone lines you own | one registered business |
| Chat shape | n-party, up to 31 handles | strictly 1:1 |
| Who speaks first | you may message first | inbound-first — invitations are the only exception |
| Idempotency | optional field | required header |
| Delivery signal | delivered + read receipts | neither exists; sent means accepted |
| Consent | STOP keywords | a first-class consent ledger |
API reference All 52 operations, with a request and response for each.
Sending Parts, idempotency, and why one send can become several messages.
Consent Attestation, categories, and automation pause.
Invitations The one way to start a conversation.