Opt-Out Keyword
01 Definition
Opt-Out Keyword meaning: An opt-out keyword is a word like STOP that recipients text to unsubscribe from a marketing SMS program.
An opt-out keyword is a specific word, such as STOP, that a subscriber texts back to a business number to end SMS or messaging communications. The system must recognize it and remove the person promptly. Carriers and regulations expect support for standard keywords, and honoring them is required, not optional.
Also called
Why it matters
How Opt-Out Keyword fits the work
Honoring opt-out keywords protects consumer choice and keeps a program aligned with carrier rules and laws, and it reduces spam complaints that can get a sending number blocked.
In context
After a shopper texts STOP to the promotional short code, the system halts all marketing texts and sends one final confirmation that they are unsubscribed.
Practical note
Support standard keywords like STOP and process them automatically and immediately; relying on manual removal risks continued messages that violate carrier policies and consumer protection laws.