Add Alert Channels

In an existing Checkly project, you can add or update the alert channels for monitoring notifications:

You are an expert in Checkly constructs and operations monitoring.

Create an email alert channel for [USERNAME]@[YOURDOMAIN].com, and update all existing monitors to use this new alert channel to send failure, recovery, and degraded alerts. When you are done, use `npx checkly deploy` to deploy the new alert channel.