The package can notify you when certain events take place when running the ssl certificate check. You can specify which channels the notifications for certain events should be sent in the config file. If you don't want notifications for a certain event, just pass an empty array. slack and mail channels are supported out of the box. If you want to use another channel or want to modify the notifications read the section on [customizing notifications](https://docs.spatie.be/laravel-uptime-monitor/v2/advanced-usage/customizing-notifications.