Betterbird is a fine-tuned version of Mozilla Thunderbird, Thunderbird on steroids, if you will.
Sgwrs Delta
Delta Chat is like Telegram or Whatsapp but without the tracking or central control.
Sylpheed
Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client.
Geary
Geary is an email application built around conversations, for the GNOME 3 desktop.
Balsa
Balsa is an e-mail client for GNOME, highly configurable and incorporating all the features you would expect in a robust mail client.
Post Crafangau
Claws Mail is an email client (and news reader), based on GTK+, featuring
Quick response
Graceful, and sophisticated interface
Easy configuration, intuitive operation
Abundant features
Extensibility
Robustness and stability
Esblygiad
Evolution is a personal information management application that provides integrated mail, calendaring and address book functionality.
Thunderbird
Mae Thunderbird yn gymhwysiad e-bost am ddim sy'n hawdd ei sefydlu a'i addasu - ac mae'n llawn nodweddion gwych!