ContactRescue - Magically get your address book up-to-date and accurate
Polymail - Native email app for email productivity.
Pulse Uno - Let them know about you.
Airmail - Airmail is a lightweight and lightning fast mail client for Mac.
Wall Of Me - Wall of me: all your favorite socials in a single place.
Morning Mail - A new way to manage your mail. Tinder for email.