Two-way SMS and MMS in your shared inbox
Two-way texting for reminders, alerts and support.
Available on every plan.
Last updated:
How the SMS & MMS integration works
Inno Message adds SMS and MMS as a two-way channel: customers text your number, the message lands in the shared inbox, and agents reply as they would on any other channel. Your systems can also send transactional texts such as reminders and alerts through the API, and replies come back to the same conversation.
Who it's for: Teams that need to reach customers on any phone, and anyone sending reminders or alerts.
Two-way by default
Replies to reminders and alerts arrive in the inbox instead of disappearing.
Send from your systems
Trigger texts from your own software through the REST API.
Automated follow-up
Keyword rules handle replies like "YES", "STOP" or "RESCHEDULE".
Set it up
Add a sender
Connect an SMS-capable number or sender ID for the countries you message.
Set opt-out handling
Configure STOP keywords and consent rules required in your markets.
Start sending
Reply from the inbox, or send transactional texts through the API.
Details
- Message types
- SMS and MMS (where supported by the destination country and carrier).
- Sender options
- Vary by country; long codes, short codes and alphanumeric sender IDs follow local rules.
- API
- POST /v1/messages with "channel": "sms".
Questions about SMS & MMS
Can customers reply to texts we send?
Do sender IDs work in every country?
More answers in the Inno Message FAQ.

