Setting up pure e-mail forwarding
Please click in the section Domains -> My domains.

Configuration e-mail forwarding
In the DNS settings, please click on the edit button behind the domain name.

Under Mail settings activate Redirect.
At source please enter the alias (the part before "@") of the e-mail address from which you want to forward the message.
If necessary, you can also use a wildcard (*) as an e-mail alias for the local e-mail address. The domain name ( the part after the "@") for the e-mail address to be forwarded is fixed.
At destination please enter the (complete) target e-mail address. Finally click the button save.

Please note
There is merely a syntax check - the functionality or reach-ability of the destination e-mail address is not tested.
Attachments
The maximum file size for attachments is 50MB.