Twilio SendGrid Changelog | Jun. 07, 2023

TLS v1.0 and 1.1 Support Deprecation

As of June 5, 2023, Twilio SendGrid no longer supports TLS v1.0 and v1.1 for mail send. Any connection attempts made after this date will fail. Due to TLS security vulnerabilities, we’re taking steps to make our mail pipeline safer. For more information on this as well as how to remediate any issues, please visit our docs page: Support for TLS 1.2

Twilio SendGrid Platform Email Deprecated