Broaden your selection: Category/Email-software
- Astroid is a lightweight and fast Mail User Agent that provides a graphical interface to searching, display and composing email, organized in thread and tags. Astorid uses the notmuch backend for blazingly fast searches through tons of email. Astroid searches, displays and compose emails - and rely on other programs for fetching, syncing and sending email. Check out Astroid in your general mail setup for a suggested complete mail solution. 
- A simple, fast and secure PHP/AngularJS based single user feed and mail reader, password and bookmark manager. CacoCloud is divided into a RESTful PHP backend storing all data into a SQLite database and an SPA frontend based on AngularJs.
- Claws Mail
- Claws Mail is an email client (and news reader), based on GTK+, featuring :
- Graceful, and sophisticated interface
- Easy configuration, intuitive operation
- Abundant features
- Robustness and stability
- Elm is an interactive screen-oriented mail reader that needed no documentation for the casual user, but was still powerful enough and sophisticated enough for a mail expert. It is superseeded by mutt, in the view of many people. The package name stands for Electronic Mail. It was one of the most common mail readers of its time.
- GNUS (Gnus Network User Services) is an Emacs package primarily designed for reading and posting Usenet news. It can also be used to read and respond to messages from a number of other sources—email, remote directories, digests, and so on. This package provides a full-featured, robust, well-documented mail/news client in Emacs. Gnus is maintained as part of GNU Emacs.
- Icedove is an multiplatform mail client based on Mozilla Thunderbird. It supports different mail accounts (POP, IMAP, Gmail), has an integrated learning Spam filter, and offers easy organization of mails with tagging and virtual folders. Also, more features can be added by installing extensions. The goal of Icedove is to produce a cross platform standalone mail application using the XUL user interface language.
- K-9 Mail
- A touch-interface email client designed for Android-based devices. Supports POP3, IMAP and WebDAV email protocols. Supports GPG encryption via APG.
- MH-E offers the functionality of MH, the visual orientation and simplicity of use of a GUI, and full integration with Emacs and XEmacs, including thorough configuration and online help. MH-E lets users read and process mail very quickly: many commands are single characters; completion and smart defaults are used for folder names and aliases. With MH-E you compose outgoing messages in Emacs. This is a big plus for Emacs users, but even non-Emacs users have been known to use MH-E after only learning the most basic cursor motion commands. Additional features include:
- attractive text rendering with font lock
- composition and display of MIME body parts
- display of images and HTML within the Emacs frame
- folder browsing with speedbar
- ticking messages
- lightning-fast full-text indexed searches of all of your email
- virtual folders to view ticked and unseen messages, search results
- multiple personalities
- signing and encrypting
- spam filter interaction
- XFace, Face, X-Image-URL header field support with picons
- Mailpile is an email client with a familiar web interface. It provides typical read, write, organise and search tools, as well as OpenPGP signatures and encryption when sending email. Additionally your email and search indexes are encrypted in the event that your machine is stolen. You can install Mailpile on your own machine or a remote machine, and access it via your browser either way, but note that it is an email client (MUA) not an email server (MTA). You will still require an account on an email server.
- mu/mu4e is an e-mail search engine (mu) and an emacs-based e-mail client (mu4e) written on top of it. It provides a powerful mail system that is designed for dealing enormous amounts of e-mail messages. It also allows bindings for scripting with the Scheme programming language, advanced processing of data, and doing all kinds of statistics. Component programs:
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