By default, the 1&1 WebMail system will move deleted e-mails to the Trash folder where they can be viewed and restored if necessary. As a result, deleting e-mails from the inbox does not free up space in your mailbox. To permanently remove these e-mails, they must also be deleted from the trash folder.
You may set the configuration of the 1&1 WebMail system to permanently remove deleted E-mails. Using this option, deleted e-mails are not moved to the trash folder but deleted right away instead. To enable this option, you will need to perform the steps below.