The first message a user receives after opting in should confirm the opt-in.
This is similar to what is on the landing page / opt-in requirements.
Here are the requirements for the confirmation message:
1. The brand / who is sending
Roezan:
2. Description of messages
Thanks for signing up for Roezan SMS notifications.
2. Message frequency
Message frequency varies.
3. Fee warning
Msg&Data Rates May Apply
4. Opt-out instructions
Text STOP to stop
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A full example message could look something like this:
Hey %FIRST_NAME%, this is Clayton from Roezan. Thanks for signing up for Roezan SMS notifications. Msg&Data Rates May Apply. 1-3 Msgs/week. Text STOP to stop.