Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Roundcube - Web-based IMAP email client
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Mailpile - Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.