The account owner is responsible for managing billing in your Fathom. 

To change your email address in Fathom, you'll need to log in using your existing/old email address and invite your new email address into the account as a new user. Then, you will be able to switch your access rights over to your new address.

To switch to using a different email:

Once you've transferred ownership to the new email address, you can log into Fathom with your new email address and delete the user profile with your old email address.

If a Fathom user needs to change their email address, an admin user can invite them in on their new email address and then delete their old email from User Management. 

Additional knowledge & common questions