[RFC] 5465 [Name] The IMAP NOTIFY Extension [Capability name] NOTIFY (L) [Agorum Core] no [Apache James] no [Archive​opteryx] no [Axigen] no [Citadel] no [Communigate Pro] no [Courier] no [Cyrus] no [DBMail] no [Dovecot] v2.2 [GMail] no [IceWarp] no [Isode] no [Kerio Connect] no [MDaemon] no [Microsoft Exchange] no [Oracle] no [UW-IMAP] no [Zimbra] no [WinGate 7] 
no