Airmail is a fast mail client for Mac and iPhone.

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

EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries, e…

FCorp ID Book is a portable, light but powerful address book.

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.

Mailspring is a multi-platform email client.

Apple Mail is an email client included with the operating systems macOS, iOS and watchOS by Apple Inc.

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

Evolution is the official personal information manager for GNOME.

Geary is an email application built around conversations, for the GNOME 3 desktop. It allows you to read, find and send email.

MailMate is an IMAP email client for macOS featuring extensive keyboard control, Markdown integrated email composition, advanced search conditions.

Microsoft Outlook is a personal information manager from Microsoft.