Alerts and the weekly digest

Channels fire when an authentication status changes, a blacklist listing appears or clears, or a DMARC fail rate spikes. The first check of a new domain stays quiet.

Email uses Resend when RESEND_API_KEY is set. Otherwise the message is stored on the Alerts page.

Slack channels receive a text payload. Generic webhooks receive JSON. HTTPS is required except for this app’s own origin.

The digest sends on Mondays after 14:00 UTC. You can send it immediately from the Alerts page.