Managing Pipeline notifications
Using Gitlab's notification settings, you can configure notifications in whatever way best suits you.
Adding email addresses
To add email addresses to your account (for sending notifications), click your profile picture in the top-right corner, then click Settings → Emails and add an email address in the box provided. You will need to verify the email address to use it for notifications.
Modifying notification settings
To modify your notification settings, click your profile picture in the top-right corner, then click Settings → Notifications.
You can change your notification email address to any of your configured email addresses in the Notification email section.
To be notified about pipeline successes as well as failures, click the box under "Global notification level" and select "Custom"
You can then select Successful pipeline to be notified of those.
For more information on how to configure for particular notification types, see Gitlab's documentation.