Under disk space limit you can specify how much space will be used for the mailbox.
Enter your desired e-mail-adress here. As example "max" for firstname.lastname@example.org.
If you want to use more e-mail-adresses in this mailbox, click on "Add another E-mail adress".
Important: Use "Add another E-mail adress" only, if the e-mail-adresses should be retrieved by the same person. For different individuals, a new mailbox has to be created, so seperate access data be setup (repeat steps 3 - 6).
By clicking on the "Delete" Button, you can delete an already been created and no longer needed e-mail-adress at any time.