What error code will I see if my TFN messages are rejected as spam?

[Meredith_W]

Toll-Free numbers that are Pending Verification or Verified will receive Sinch error code 255 if messages are blocked for SPAM.

Effective November 8, 2023, Unverified TFNs are blocked from sending messages and will receive error code 64 "Unverified Toll-Free Number" (for more info see TFN messaging limits).

Please see Toll-Free delivery report errors on the Sinch Developer site for a complete list of Toll-Free specific error codes.

[#2]

Unverified toll-free numbers (TFNs) and Pending Verification toll-free numbers (TFNs) are subject to industry-wide message blocking. Unverified toll-free numbers are TFNs that have not completed the toll-free sender verification process. Pending Verification toll-free numbers are TFNs where a verification request has been submitted, but the request is pending review and approval. 

Note: In the past it was possible to send messages from an Unverified TFN or Pending Verification TFN. However, as a result of industry-wide changes, all toll-free numbers, regardless of the use case, must be Verified to originate traffic.

UNVERIFIED toll-free numbers (TFNs) are subject to industry-wide message blocking, effective November 8, 2023.

PENDING VERIFICATION toll-free numbers (TFNs) are subject to industry-wide message blocking, effective January 31, 2024.

All toll-free numbers (TFNs) must be in a VERIFIED state in order to originate traffic.

Unverified TFNs and TFNs pending verification will be blocked with Sinch error code 64 “Blocked due to exceeded quota”. Please see Toll-Free Delivery Report Errors for a full list of Sinch Toll-Free error codes.