Opt-in confirmation must carry a working opt-out instruction
The requirementstatement
The confirmation must include STOP instructions echoing a keyword the programme honours.
- Severityseverity
- BlockingBLOCKINGBreaking this rule gets the submission rejected. There is no partial credit.
- When it bitesphase
- Gates approvalapprovalGet this wrong and the brand or campaign is refused at registration.
- What is checkedobject
- campaign.optin_message + campaign.optout_keywords
- Where it liveslayer
- Message contentMESSAGE_CONTENT
- How Ekas settles itdetectability
- AI · formAI_FORM
- A semantic question about what you wrote: whether a description matches a use case, whether a name looks like a filed entity. Judged by a model against written criteria.
- What the fix involvesfailureClass
- Fix the fieldRETRY_FIELD
- A better value in the form fixes it. Ekas can rewrite it and re-check.
- Who requires itauthorities
- CTIAFCCTCR
- When it appliesapplicabilityText
- Applies to every 10DLC registration.
Why this rule existsrationale
A consumer who realises immediately that they did not mean to subscribe should be able to leave from the first message. The keyword named must be one the platform actually honours, or the instruction is worse than useless.
How to fix itremediation
Add "Reply STOP to cancel" and confirm STOP is in your declared opt-out keyword set.
A compliant exampleexample
Reply HELP for help, STOP to cancel.
Rules you will hit next
Other message content rules at the same severity. A registration is judged as a whole, not rule by rule.
MSG-008Opt-in confirmation must be 20–255 charactersBlockingBLOCKINGMSG-009HELP reply must be 20–255 charactersBlockingBLOCKINGMSG-011Opt-out confirmation must be 20–255 charactersBlockingBLOCKINGMSG-018An MMS campaign must attach at least one sample media fileBlockingBLOCKINGMSG-019Each MMS sample file must sit under its per-type size ceilingBlockingBLOCKINGMSG-031Sample messages must be in EnglishBlockingBLOCKING
MSG-066 is one of 122 message content rules in the 915-rule 10DLC registry. Free to cite under CC BY 4.0.