When someone texts in your keyword, it's smart to send an auto-reply message to your contact letting them know that they've joined your group.
Step 1: Go To Messages > Followups
Head over to the followups page and click the "Create a Followup" button.
Step 2: Create a Name & "Send Immediately"
Give your followup a name and set the schedule to "Send Immediately." This setting will send the message immediately to the contact as soon as they join your group.
Step 3: Create Your SMS Message
Create your SMS message that you want your new contact to receive immediately after they opt-in.
Step 4: Turn Your Followup "ON"
After you save your Followup, you can select to turn it ON (activated) so people can receive this message.