Click the Address link from the Account Management section of the 1&1 Control Panel.
1&1 Control Panel
Enter your new information in the appropriate text boxes. Review what you've entered and when you're done click Confirm.
Please be advised that our system will not accept a P.O. Box as a valid address.
Edit Address menu
Using a Form
If you encounter issues with updating your account information in the 1&1 Control Panel, or do not have access to the 1&1 Control Panel, please see the Administrative Forms page to submit your changes using the appropriate form.
For additional information, you may want to reference: