Betterbird is a fine-tuned version of Mozilla Thunderbird, Thunderbird on steroids, if you will.
Delta Chat
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 es una aplicación de correo electrónico basada en conversaciones, para el escritorio GNOME 3.
Balsa
Balsa is an e-mail client for GNOME, highly configurable and incorporating all the features you would expect in a robust mail client.
Garras de correo
Claws Mail is an email client (and news reader), based on GTK+, featuring
Respuesta rápida
Interfaz elegante y sofisticada
Fácil configuración, operación intuitiva
Abundantes funciones
Extensibilidad
Robustez y estabilidad
Evolución
Evolution is a personal information management application that provides integrated mail, calendaring and address book functionality.
Thunderbird
Thunderbird is a free email application that’s easy to set up and customize – and it’s loaded with great features!