If you're looking to send a message to subscribers based on the keyword they used to opt-in, you're in the right place.
Click the New Messaging icon or the list on the dashboard.
If you click on the List name select the New Message button.
Select MMS or SMS for the type of message
Enter your desired message in the text main body.
Tip: If you decide to use this message for after opt-in ost businesses use this type of message to reward customers for becoming new subscribers, as this message is only sent after someone subscribes for the first time. If you're looking to just welcome them to your list, we recommend doing that in a scheduled message to new subscribers.
Once you've finished composing your message, scroll down to Recipients and select Segment.
Select Most Recent Opt In Keyword in the dropdown down, leave "Is" and then enter the keyword you wish to send the message.
It is important to make sure the keyword has been added to the list.
Select Save as Draft or Send depending on the needs for that message.
The Opt-In keyword associated with a subscriber is set whenever a customer opts-in. If a customer opts-in, then uses an keyword in an attempt to opt-in again, the opt-in keyword will not be changed. If a customer opts-out, then opts-in again, this time with a new keyword, that new keyword will be set as that customer's opt-in keyword.