astroid is described as 'Astroid is a Mail User Agent. As such, all Astroid provides is a graphical interface to your email. Thus, Astroid enables you to launch actions that rely on the performance of other programs to actually fetch, sync, index, search and send your email' and is a Email Client in the os & utilities category. There are seven alternatives to astroid for Linux, Mac, Windows, BSD and Xfce. The best astroid alternative is Mutt, which is both free and Open Source. Other great apps like astroid are aerc, sup, meli and mu.
Mutt is a small but very powerful text-based mail client for Unix operating systems. Some of its features are: color support, message threading, MIME support (including RFC2047 support for encoded headers), PGP/MIME (RFC2015), various features to support mailing lists, including...
United States
aerc is an email client that runs in your terminal. It's highly efficient and extensible, perfect for the discerning hacker.
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.
Experimental terminal mail client aiming for configurability and extensibility with sane defaults.
mu is a tool for dealing with e-mail messages stored in the Maildir-format, on Unix-like systems. mu's main purpose is to help you to find the messages you need, quickly; in addition, it allows you to view messages, extract attachments, create new maildirs, …
Netherlands
EU
Notmuch is a system for indexing, searching, reading, and tagging large collections of email messages. It uses the Xapian library to provide fast, full-text search of very large collection of email with a very convenient search syntax.
nmzmail is a tool, primarily to be used with mutt, for indexing and searching maildir folders. Based on the result of a search query using the search
