Here are the available enterprise email addons. ActiveSync is a protocol licensed to us on a per user basis, and can be added to any of your mailboxes.
Total storage can be allocated to mailboxes as you wish. We also have a small 5 mailbox plan as well as larger plans. See them all here
|In/Outbound Archival||$9.00 | $21.00 | $40.00 / month|
|ActiveSync||$0.90 | $0.84 | $0.80 / month per mailbox|
|1 Dedicated IPv4 Address||$4.00 / month|