WSO2 Changelog

OAuth2 authentication for SMTP servers.

The Email Provider template now supports OAuth2-based authentication for SMTP servers. Alongside the existing Basic authentication option, you can now configure SMTP using client credential authentication to meet modern authentication requirements.

This enhancement comes ahead of Microsoft’s planned retirement of Basic authentication with Client Submission (SMTP AUTH) in Exchange Online, scheduled for April 2026. Enabling OAuth2 support now ensures uninterrupted email delivery and keeps your configuration aligned with the latest security standards.

• https://techcommunity.microsoft.com/blog/exchange/exchange-online-to-retire-basic-auth-for-client-submission-smtp-auth/4114750

Documentation:

• https://wso2.com/asgardeo/docs/guides/notification-channels/configure-email-provider/