- Twilio will rotate the end‑user TLS certificate for all REST API endpoints on September 9 2026.
- Only users who pin certificates or manage them manually need to verify; Twilio Helper Libraries handle the change automatically.
- A test endpoint (https://tls-test.twilio.com) is available from August 12 2026 to confirm the new certificate works.
Twilio end-user certificates for all REST API endpoints will be rotated on September 9, 2026
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