Aerc is an email client that runs in your terminal. It's highly efficient and extensible, perfect for the discerning hacker. Some of its more interesting features include:

* Editing emails in an embedded terminal tmux-style, allowing you to check on incoming emails and reference other threads while you compose your replies * Render HTML emails with an interactive terminal web browser, highlight patches with diffs, and browse with an embedded less session * Vim-style keybindings and ex-command system, allowing for powerful automation at a single keystroke * First-class support for working with git & email * Open a new tab with a terminal emulator and a shell running for easy access to nearby git repos for parallel work * Support for multiple accounts, with IMAP, Maildir, Notmuch, Mbox and JMAP backends. Along with IMAP, JMAP, SMTP, and sendmail transfer protocols. * Asynchronous IMAP and JMAP support ensures the UI never gets locked up by a flaky network. * Efficient network usage - aerc only downloads the information which is necessary to present the UI, making for a snappy and bandwidth-efficient experience * Email threading (with and/or without IMAP server support). * PGP signing, encryption and verification using GNUpg. * 100% free and open source software!