11e51f25_muniGate_Pro_Server__Mailboxes__Negative_Name
[Name] Seen [Description] This flag is set when the message was read by a client. It can be set automatically as a result of certain Mailbox access operations, and it can be set and reset explicitly with mail client applications. [IMAP Name] \Seen [Negative Name] 
Unseen
CommuniGate Pro Server: Mailboxes
Negative Name