Setup Slack webhook How to do this is indicated on the following link https://api.slack.com/messaging/webhooks
Specify Slack channels
Enter one or more channels into input and press enter or choose it after each input.
You can specify one or multiple emails for notifications in the input field. By default, email notifications are enabled for the account owner
To test your notification settings, press Save and Test.
If only Slack channels and webhook are specified correctly, you will receive the notification in the Slack channels. If only the emails are specified, you will receive notifications to those emails. When both notifications are specified, all notifications will be sent to Slack channels and emails.
If the Save button is pressed, then entered channels will be only saved, and you get a success message.
If the Save and Test button is pressed, then all entered information will be saved, and test notifications will be sent to the entered channels
Examples of the test notification messages: