Toll-Free Verified Sender Form

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Sinch Toll-Free Sender Verification ensures better deliverability for messages from your toll-free number (TFN). TFNs that are not verified are subject to rate limits and blocking towards US and Canadian carriers.

You can find a link to the Toll-Free Verified Sender form in the Sinch customer dashboard on your toll-free number details page.

The VSF link can be found on your toll-free number details page in the Sinch customer dashboard

While using the link in the customer dashboard is the preferred method to submit a toll-free verification request, you can also verify your TFN by completing the form here: Toll-Free Verified Sender Form.

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

UPDATE: As a result of industry-wide changes, all messages from Unverified Toll-Free numbers will be blocked, effective November 8, 2023. On this date, all Unverified Toll-Free numbers will require a pending verification request or to be in a verified state in order to originate traffic. All messages from Pending Toll-Free numbers will be blocked, effective January 31, 2024. On this date, 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 blocking, effective November 8, 2023.

PENDING VERIFICATION Toll-Free numbers (TFNs) are subject to industry-wide U.S. messaging limits per TFN*:

• Daily Limit: 2,000 messages per day per pending TFN 
• Weekly Limit: 6,000 messages per week per pending TFN 
• Monthly Limit: 10,000 messages per month per pending TFN 

*Pending verification TFN traffic will be blocked beginning January 31, 2024. 

Unverified TFNs will be blocked with  Sinch error code 64 “Blocked due to exceeded quota”. Pending Verification TFNs that exceed messaging limits 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. 

Pending Verification TFNs are subject to more stringent message filtering than Verified TFNs. Daily volume limits reset at 12am PT, weekly volume limits on Sundays at 12am PT, and monthly volume limits at the end of each month at 12am PT. All messages, regardless of being successful or not, will count towards daily, weekly and monthly volumes limits. Beginning January 31, 2024, all traffic originating from pending verification TFNs will be blocked.