Business SMS Marketing Auto Reply will notify you a day before the expiration.
A subscription notice will appear in the notification bar and also when you open an app.
Can I send an image with KW Autoresponder?
Does KW Autoresponder need to run all of the time?
How long can my SMS messages be?
How to Cancel; Restart a subscription on Google Play
How will I know when my keyword subscription going to expire?
Where exported statistic report is stored?
Why KW Autoresponder’ Reports show that message was sent but it has not arrived?