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.
Edit the body of every notification email the platform sends, change a subject line through a localization property, and revert a template to its default.
Reference of the variables available in each email template type — which data each variable carries and which templates it applies to — so templates can be edited knowing what's available to display.
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.
Choose which cycle and watched-object events send email in a repository, who receives them, and whether cycle to-do emails combine into a daily digest.