Name: imapidlepoll
Type: DURATION
Default-Value: 60s
Last-Modified: 3.1.8

The interval for polling for mailbox changes and ALERTs while running the
IDLE command.  This option is used when idled is not enabled or cannot be
contacted.  The minimum value is 1 second.  A value of 0 will disable IDLE.

For backward compatibility, if no unit is specified, seconds is assumed.
