Your Account always has an "Owner" user, and you can also add as many additional users to your account as you'd like. Each user has a unique email associated with them to login and/or receive booking confirmations from others.
To change your User email, click your User picture on any page and head to "User Preferences" in the menu:
In the User Preferences menu, you'll now see an option to change your desired Contact Name, Contact Email and Contact Phone Number. There are even additional options to toggle email notifications and change your login password:
