From the developer:
I have lots of applications with lots of BIG windows and only one monitor. I wanted a quick way to see if I had any new mail in Mail without actually wasting the .35 seconds required to make the Dock spring up or to command+tab to Mail only to have my hopes dashed by not finding a little red badge on the Mail icon. I tried a Konfabulator widget that had a floating window that displayed if and how many unread emails you have, but try as I might I just don't have the taste for floating windows, I value my screen
- Significant changes "behind the scenes" to improve speed and memory efficiency.
- New "Only check INBOX for IMAP accounts" (now a default) that should improve handling of large IMAP accounts. It can be turned off if you need to monitor mailboxes other than INBOX. This option does NOT affect .Mac accounts.
- New preference to automatically launch Mail if it is not