In PagerDuty, your login email address is set by clicking your avatar in the top right corner, selecting My Profile, and going to the User Settings tab. Click the edit icon to the right to update your email address.
Note: For added security, we require your password to confirm changes to your login email address. This prevents anybody else with access to your computer from changing your PagerDuty login email address without your knowledge.
This process is the same for admins that need to change another user’s login email address. Simply go to Configuration → Users, click on the user you want to update and go to the User Settings tab. Just like updating your own login email address, you will need to enter your password to confirm the change.