Gammadyne Clyton - Clyton is an email client with advanced security and spam filtering features.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
The Bat - The Bat! is a secure desktop email client for Windows, designed to protect your correspondence against third-parties and to save your time.
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
MyEmail - MyEmail is an online service that works as a free email service system making its clients able to check their emails from any part of the world.