Integrations
Alert channels are where you hear about a problem. Deploy hooks tell the incident what changed right before it.

Where alerts go
Slack, Discord and email are unlimited on every plan. Telegram counts people, groups and channels together: 3 on Free, then 10, 20 or 30. Groups and channels need a paid plan.
TelegramNo codeAlerts in your own chat, a group or a channel, with Acknowledge and Resolve buttons.1 min to set upSlackNo codeIncident and recovery messages in one Slack channel.2 min to set upDiscordNo codeIncident and recovery messages in one Discord channel.2 min to set upEmailNo codeAlerts to your teammates by email. Each address picks which alerts it gets.1 min to set up
Deploys
So an incident shows what changed right before it.
Need another source? Anything that can POST JSON works through Deploy hooks. From your own code, use the installer.