proton mail

Fully-featured SMTP/POP3 mail server program to use along with any mail client.

Courier Mail Server is a e-mail server. Contains Web and SOCKS servers.

si.Mail is a mail client and not cluttering taskbar.

Element Mail is a full featured Windows E-Mail client

Indispensable Tool for Data Backup of Windows Mail and Windows Live Mail.

Dwarf Mail Server is a full-featured mail server developed on the Java platform.

Dwarf Mail Server is a full-featured mail server developed on the Java platform.

A scriptable SMTP e-mail client utility sends out pre-configured e-mail messages

Windows Mail Minimizer allows you to minimize Windows Mail to tray.

E-Mail Notifier - it is an easy-to-use e-mail client which works as notifier.