Sparrow, is an alternative email client for Mac computers is now no longer Gmail only version. The new Sparrow 1.1 version supports any IMAP accounts like Yahoo, AOL, MobileMe as well as any custom IMAP domain account that you are running.
This version also brings Priority inbox support for Gmail users, although non- Gmail users won’t be able to use this feature (unfortunately).
Other changes includes a new formatting bar, that offers customization to your Gmail account email-messages and an unread-only section is also there which will help to hide all your old mail and multitouch gestures for Mac computers.
Sparrow is available in Mac App Store with a price tag of $9.99 whereas this (1.1) updated version is free for all paid Sparrow users.