The Bat! is a secure email client software, built to protect your correspondence against third-parties.




Sylpheed is described as 'Simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA)' and is a popular Email Client in the office & productivity category. There are more than 25 alternatives to Sylpheed for a variety of platforms, including Windows, Linux, Mac, Android and BSD apps. The best Sylpheed alternative is Thunderbird, which is both free and Open Source. Other great apps like Sylpheed are Betterbird, Evolution, Microsoft Outlook and Claws Mail.
The Bat! is a secure email client software, built to protect your correspondence against third-parties.




KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE. It supports calendars, contacts, notes, to-do lists, news, and email.

Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. Trojitá values vendor-neutrality that IMAP provides and is committed to be as interoperable as possible.



aerc is an email client that runs in your terminal. It's highly efficient and extensible, perfect for the discerning hacker.


Nextcloud Mail is the most popular Self-Hosted alternative to Sylpheed.
Mail is designed to let you manage your email quickly and effortlessly. Its interface is based on conversations, so you can read an entire discussion without having to click from message to message.

Foxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems.


Scribe is a small portable email client with an intergrated contact database and calendar. It supports all the major internet mail protocols and uses international standards where possible. Scribe doesn't required installing or uninstalled and can be used from a removable...





LucaMail is an open source, cross-platform email client. LucaMail is developed to provide cross-platform alternative to Email Clients that are really exists. LucaMail focuses on modern technologies as well as maintaining a user-friendly UI.




Sup is a console-based email client for people with a lot of email. It supports tagging, very fast full-text search, automatic contact- list management, custom code insertion via a hook system, and more.

NeoMutt is a command-line mail reader. It's a version of Mutt with added features.