A subscriber joins a Sendmsg mailing list and expects a clear welcome, while an unsubscribe needs to be respected across your messaging process. Sendmsg gives marketing teams events for both moments, allowing Mobile Message to send an acknowledgement or record an opt-out without someone checking lists manually.

Use Subscriber Joined a Mailing List or New Subscriber Registered by Sign-Up Form with Mobile Message’s Send SMS action to welcome a subscriber or confirm what happens next. Unsubscribe can trigger Add Unsubscribe in Mobile Message, helping keep SMS activity aligned with a person’s stated preference. New Subscriber Registered by Sign-Up Form can also Create Contact or Add Contact to List when the subscriber has suitable SMS consent. The connection is built through Zapier and each workflow is one-directional. It is not a shared subscriber database or a native two-way integration. Map the correct phone field, review consent wording and test both subscription and unsubscribe paths before sending live messages.