When you first activate an Import to an Account, Wallet generates a unique email address for that particular account. You'll receive an email with instructions to Import from this unique email address.
You'll be sending data files to this unique email address whenever you want to import data to that specific Account.
But, if you cannot find the initial email we sent with instructions to Import, you can easily find the unique email address associated with your Account by going to Imports in the main menu and clicking on the Account Name in the list given.
The email address will be displayed on a blue bar at the top of this screen.