Alpine
Mu4e
Mailspring
Mutt
Thunderbird
Claws Mail
Geary
MailMate
OnePatch
OnePatch is multi-purpose software solution for e-commerce retailers who sell on multiple online selling platforms. With OnePatch, sellers have the solution to organise their product stock, manage their online orders, shipping and accounts all from one simple and effective system, saving valuable time and expanding business growth.
Alpine
OnePatchMu4e - Starting with version 0.9.8, mu provides an emacs-based e-mail client which uses mu as its back-end: mu4e.
Mailspring - Mailspring is a mail client for Mac, Windows and Linux.
Mutt - Mutt is a small but very powerful text-based mail client for Unix operating systems.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Claws Mail - Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response
Geary - Geary is an email application built for GNOME 3.