Claws Mail is a free and open-source, GTK+-based email and news client. It offers easy configuration and an abundance of features.

Microsoft Mail and Calendar apps help you stay up to date on your email, manage your schedule and stay in touch with people you care about the most.

Microsoft Outlook is a personal information manager from Microsoft.

The Bat! is an email program for Windows that protects the correspondence and empowers the users to handle large amounts of emails quickly and efficiently.

eM Client is a Windows based e-mail client for sending and receiving e-mails, managing calendars, contacts, and tasks.

Mailbird is a desktop email client for Windows 7, 8 and 10.

Thunderbird is a open source mail client developed and maintained by Mozilla foundation.