Welcome to Muttator WARNING: Muttator is still alpha-software, so not all features will work yet. However, I use it myself already to manage my mails. Muttator is a free add-on for Thunderbird, which makes it look and behave like the Vim text editor. It has similar key bindings, and you could call it a modal mail client, as key bindings differ according to which mode you are in. Downloads Version