Broken client defer exists Option

Introduced in release: 8.0.2.1

Starting in Messaging Server 8.0, the IMAP server notifies the client as soon as new mail arrives regardless of whether the IDLE command is in use. The IMAP specification requires clients to support this behavior (RFC 3501 section 2.2.2). Some clients fail to comply with the standard and lose state information about new messages. This option can be set to workaround clients that are broken in this way. It causes IMAP  and   responses to be deferred unless a command is in progress.

The default value is: 0

See also:
 * IMAP options
 * capability_idle Option
 * ENS options