Alerts

Every account starts with an email channel pointed at the signup address. That works on every plan. Slack incoming webhooks, Discord webhooks, and Telegram bot tokens are Pro and Team features. The URL or token is encrypted before it is stored. The screen shows a masked hint, not the secret.

Messages go out when a monitor is marked down, when it recovers, when a runaway limit trips, and when you press Send test. Without RESEND_API_KEY, email is written to the in-app outbox instead of a provider, which is how local development works.

Slack URLs must be https://hooks.slack.com/services/…. Discord URLs must be https://discord.com/api/webhooks/… or discordapp.com. Arbitrary URLs are rejected so a channel cannot be aimed at an internal address.