In order to complete this process, you will need to know the current password for your 1&1 Mail Business e-mail so that you are able to log into the webmail interface and set a new password.
Step 2
Click the gear icon and then select Settings.
gear icon > Settings
Step 3
Select Change Password from the Settings menu.
The Settings page
Step 4
Enter your current password in the text field and then enter your new password twice. When you are finished, click the Change Password button.
The password reset page