How to Get a Toll-Free Number Verified

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With Klaviyo, you can verify one toll-free number, making it a trusted sending number for carriers. This in turn helps your SMS deliverability, increasing the number of messages that get delivered to your subscribers.

To have a toll-free number verified, you must fill out a form and send it to Klaviyo Support. Note that it will typically take 7–10 business days to be reviewed by the SMS Team and, if applicable, approved. In this article, we show you where to download the form, what questions appear, and how to submit this request.

Being Approved for Verification

You can only one toll-free number per account. Further, not all toll-free numbers will be approved for verification. Any sender who seems to go against TCPA or CTIA guidelines will not be verified. In addition, it’s important to follow SMS best practices, including:

You should also avoid inappropriate and illegal content (e.g., SHAFT), high-risk financial services (loans, debt forgiveness, and credit repair), and deceptive marketing practices. These practices are frowned upon and will decrease your chances of having your toll-free number verified.

For more information on what to include (or not include) in your messages, check out this Guide to Writing SMS and MMS Copy.

Fill Out the Toll-Free Number Verification Form

To begin the process, you need to answer all of the following questions. If you skip or leave any blank, keep in mind that the form will not be processed. To view this form, click here.

Business name



Business registered address













Business contact





Business contact information





Toll-free number



Summarize the use case



How will subscribers opt in to your SMS program on this toll-free number? (Please provide screenshots of any SMS signup forms and text-to-join messages)



Sample SMS message content



Will the text messages be advertising or promoting a commercial product or service? Yes                No                Unsure
Was this traffic previously on another SMS messaging service? No, New to Messaging     Yes, Short Code     Yes, Long Number
If previously on another messaging service, please provide sample content and numbers







Where is the toll-free number published (if anywhere)?



Are you a Fortune 500 or 1000 company?



Corporate website



Call to actions (in the messaging)







Monthly SMS volume through this number  

Submitting the Form

Once you finish filling out this form (including sample messages, screenshots of signup forms, etc.), send it via email to the Klaviyo Support Team. Use “Toll-Free Number Verification” as the subject line and include your Klaviyo account number.

Once we receive the form, it will take approximately 7–10 business days for the number to be approved. In the meantime, you can continue using the toll-free number to send messages, but the number will not be considered verified until it is approved.

Additional Resources

Learn more about carrier filtering and different sending numbers: 

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