Can I create a catch-all mailbox?
Yes you can.
By default, the SiteHost mail servers deliver each incoming email message to the inbox of the specified recipient. If the message is addressed to an unknown recipient that is, to a user who does not exist in your domain the mail server bounces the message back to the sender.
However we allow you change this default behaviour by instructing the mail server to forward mail for unknown recipients to an valid email address.
To enable a catchall using SiteHost Control Panel
To forward mail to a catch-all mailbox please refer to Enabling a Catch-all Address.