3 docs tagged with "smtp"

Send platform email over SMTP with OAuth through Microsoft Exchange Online: register an Azure app, create a client secret, grant SMTP.SendAsApp, add a service account, and configure Email Settings.

Test emails fail with 'PKIX path building failed' because the platform's Java runtime doesn't trust the SMTP server's TLS certificate.

Turn platform email notifications on, set the sender and subject prefix, connect your mail server, and send a test email.