- In the upper-right corner of any page, click your profile photo, then click Settings.
- In the left sidebar, click Emails.
- Under "Backup email address," select the address you want to set as your backup email address using the drop-down menu.
- Click Save.
Article version: GitHub.com
Setting a backup email address
Use a backup email address to securely reset your password if you can no longer access your primary email address.