Office 365 - Hosted Exchange - Count question

With the Enterprise plans for Hosted Email, how do aliases factor in when counting mailboxes? i.e. If your receptionist also got email for '' and '', is that one mailbox, or three (from a billing/subscription point of view)?
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Trenton KnewConnect With a Mentor Owner / Computer WhispererCommented:
Exchange licenses are based on the number of mailboxes that can be directly signed into.  You may have shared mailboxes delegated to sign-in users, and aliases for existing and shared boxes, but the only licenses are per-user signing into exchange.
Trenton KnewOwner / Computer WhispererCommented:
your generic accounts like and can exist as shared mailboxes, and you then delegate "" read and send-as permissions.  As long as "Joe" has his own mailbox and sign in, this is still only one license.
tnormanAuthor Commented:
Good answers. Appreciate the time on this.
Trenton KnewOwner / Computer WhispererCommented:
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