Family member accounts
The Trusted Traveler Programs site supports only one login.gov account per individual application. Each family member will need a unique email address to create a login.gov account. We completely understand you may prefer to share an email address with your family members, or do not wish to set up an email account for your children.
Some email providers may have options to create alias addresses (or, forwarding addresses). If you are a Gmail user, you can have multiple email aliases point to the same inbox:
If your email is firstname.lastname@example.org, you may enter email@example.com or firstname.lastname@example.org when creating a new login.gov account. login.gov will recognize each of these email addresses as unique, and all confirmation emails will be delivered to your email@example.com inbox.
For more information, go to https://gmail.googleblog.com/2008/03/2-hidden-ways-to-get-more-from-your.html.