How do I launch the 1&1 SMS Manager?
Log in to the 1&1 Control Panel using your Customer ID OR domain name and your password.
If you have only one package, you will land on the Administration page. If you have more than one package, select the package in question to reach its Administration page.
Click the Mail panel's title from the 1&1 Control Panel Start page.
Click the 1&1 SMS Manager link.
Click the Launch button to launch the SMS Manager.
A new window will open with the SMS Manager interface. Until you have added and confirmed your number, SMS messages will appear to come from 1&1.