Unlike a user, you do not need to purchase a license for each virtual mailbox. This means that you can set up an unlimited number of virtual mailboxes for free.
Virtual mailboxes are a way of facilitating one or more users to receive from multiple accounts hosted by the same ISP. For example, the user John Doe may receive all mail sent to john_doe@company.com, but by adding a couple of virtual mailboxes, he may also receive e-mail sent to sales@company.com and info@company.com .
Unlike users, virtual mailboxes have auto-responding capabilities. This means that WorkgroupMail can auto-reply to anyone who sends a message to a virtual mailbox.
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Editing a Virtual Mailbox's Properties