Developers behind the Sparrow project have launched a sale on the Mac App Store.

You can purchase the Sparrow for Mac app for USD 5 currently.

Sparrow for Mac is $4.99 for 3 days.Only on the Mac AppStore.Grab it now!itunes.apple.com/us/app/sparrow…

— SparrowMail (@sparrow) July 13, 2012

This sale would last for the next three days.

Sparrow is arguably one of the best email clients you can get on the OS X platform today.