Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Mailbutler - Mailbutler adds lacking functionality to email clients and increases your productivity
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
MailTime - Go through your email as fast and easy as text-messaging
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
TL;DR Email - Send short emails & read emails as fast as you read Facebook