---
page_type: error
code: 30452
message: "30452: Toll-Free phone number verification unable to process - email invalid"
level: ERROR
product: Programmable Messaging
---

## Description

Twilio is unable to process your Toll Free Verification request because it could not be validated by Twilio and could not be submitted for verification review.

### Possible Causes

The toll-free phone number cannot be verified because the email address is invalid. It could be due to:

- Incorrectly formatted email address
- Unknown email domain
- Email is a suspected disposable address
- Email is invalid

### Possible Solutions

Correct the email address and resubmit the verification in Console via the Messaging Compliance API. It is not recommended to delete the verification to resolve email validation issue.

Forbidden message categories

https://support.twilio.com/hc/en-us/articles/360045004974-Forbidden-message-categories-for-SMS-and-MMS-in-the-US-and-Canada

Toll-Free best practices can be found at

https://support.twilio.com/hc/en-us/articles/360038172934-Information-and-best-practices-for-using-Toll-Free-SMS-and-MMS-in-the-US-and-Canada