IMAP-IDLE for Mail.app 1.06 - Mac OS X Mail Plug-In

IMAP-IDLE for Mail.app adds support for the IMAP IDLE command to Mac OS X Mail, which means new messages come in as soon as they arrive at the server without any manual or periodic mail checking. IMAP-IDLE works fine and unobtrusively, but support for both enabling IDLE for custom folders and disabling certain accounts would be nice.
Mac OS X Mail 3 and later does support IMAP-IDLE without the IMAP-IDLE add-on.

If you have ever heard of — or even experienced yourself — the almost mythical abilities of the IMAP IDLE command, you probably wonder why the otherwise fine and well-equipped Mac OS X Mail does not support this great feature. Mail coming in instantly! No more compulsive checking for mail, and a lighter load on the server.

With the IMAP-IDLE for Mail.app mailbundle, you get all this goodness with no effort or obtrusion. The plug-in does not come with an installer, but moving the plug-in to Mail's "Bundles" folder (and enabling mailbundles) is really all it takes. Then, provided your IMAP server supports the IDLE command, new messages in the Inbox appear instantly and you can safely set Mail's periodic checks to "manual".

It would be nice if IMAP-IDLE for Mail.app could turn on instant updates for folders other than Inboxes, and maybe let you disable them for certain accounts altogether. On the other hand, IMAP-IDLE for Mail.app's refraining from any options or intervention or grabbing your attention is, of course, a virtue.