Ensure your apps are up to date as the following steps apply to the most recent version.
-
Tap the Message+ icon
.
If not available, navigate: Apps > Message+.
-
Tap the Menu icon
(located in upper-left).
-
Tap Auto Reply.

-
Tap Stop.

For additional info on Verizon Messages (Message+), check out these FAQs.
Related Topic:
Turn On Auto Reply