The Trigger Actions available depend on the Cumulus Server you are connected to. An action available by default is Mail Notifier which will send you an email when the action is triggered. If you select the Mail Notifier as Trigger Action when setting up a trigger, the following configuration dialog is displayed:

You can select the language of the message sent (the text is included in the Mail Notifier ESP.) If you have the Browse for Users permission, you can determine whether other Cumulus users get an email as well. If you want other users to get emails, click the Add User button to select them.

You can search for the login names of available users. Enter the search value (a matching string) and click the Find button. The result of this search is listed below. Select the user(s) you want and click OK. The users are added.