Sinch Toll-Free Sender Verification ensures messages from your toll-free number (TFN) are delivered. TFNs that are not verified are subject to blocking towards US and Canadian carriers.
You can find a link to the Toll-Free Verified Sender Form (VSF) 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: Sinch's Toll-Free Verified Sender Form.
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