Airmail 2 is a new mail client designed for Yosemite with fast performance and intuitive interaction. This version of Airmail brings an entire new engine, which allows for a much faster experience. Plus, with OS X Yosemite, you are able to utilize Share functions as well as Notification Center Widgets.
Airmail was designed from the ground to retain the same experience with a single or multiple accounts and provide a quick, modern and easy-to-use user experience. Airmail is clean and allows you to get to your emails without interruption - it's the mail client for the 21st century.