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SMS complianceReviewed September 7, 2026

What is SMS opt-in?

SMS opt-in is permission to receive a non-consumer messaging program whose form depends on the message purpose.

Who this applies to#

  • CTIA describes opt-in for an intended messaging program and purpose

What SMS opt-in requires#

  • Programs should disclose sender and purpose, provide opt-out information, and retain opt-in records

What this does not require#

  • A consumer-initiated exchange limited to relevant responses may not need additional permission for that exchange

Common mistakes#

  1. Reusing permission for a different sender or campaign
  2. Treating a reply as later promotional permission

SMS opt-in checklist#

  • State the program
  • Retain the record
  • Separate conversational and promotional use

Commonly confused with#

OnVoard's take#

Permission is specific to the sender, program, purpose, and message context; record those boundaries rather than only a timestamp.

Official sources#