SUPPORT.TWILIO.COM END OF LIFE NOTICE: This site,, is scheduled to go End of Life on February 27, 2024. All Twilio Support content has been migrated to, where you can continue to find helpful Support articles, API docs, and Twilio blog content, and escalate your issues to our Support team. We encourage you to update your bookmarks and begin using the new site today for all your Twilio Support needs.

China SMS Template Pre-approval Requests

Update May 2021: Twilio is no longer offering China SMS template registration. Changing regulations and heavy message blocking on seemingly legitimate registered traffic have made it impossible for Twilio to guarantee a high-quality customer experience for SMS messages to China mobile users.

After June 20, 2021 at 6 PM Pacific US time, all SMS message traffic to China sent via Twilio will have limited support. This means that messages may deliver with a generic signature prepended to the message, and messages may deliver with arbitrary local phone numbers as the Sender ID. Twilio will not be able to assist with undelivered messages to China.

If you send one-time passwords (OTP) or authentication codes, Twilio Verify remains an option for sending this type of SMS to users around the world, including in China.

Additional Resources

Have more questions? Submit a request
Powered by Zendesk