Polymail - Native email app for email productivity.
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Airmail - Airmail is a lightweight and lightning fast mail client for Mac.
Open Contacts - Open Contacts is an advanced address book program for managing contact info of individuals and...
Morning Mail - A new way to manage your mail. Tinder for email.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts