Here’s an excerpt from a macosxhints.com hint about optimizing Leopard Mail for accounts that support “push” (like me.com and gmail):
…this is a great way to keep your mailboxes up-to-the-second current without having Mail.app hog the bandwidth, checking every minute or five minutes.
If your server supports IDLE (Gmail, .Mac/MobileMe, and most university servers do), then [...]




