A2P Desk

Compliance

STOP and HELP Keyword Auto-Replies: What Twilio Requires

Carriers require every program to honor STOP. Twilio handles default STOP/HELP if you don't override, but custom auto-replies are recommended for branding.

Keywords you must honor

  • STOP, STOPALL, UNSUBSCRIBE, CANCEL, END, QUIT — all must opt the recipient out.
  • HELP, INFO — must respond with the brand name and contact info.
  • Custom keywords like YES, START, UNSTOP — re-subscribe behavior is your choice but must be intentional.

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