Adds keyboard shortcuts to change folder, move/copy messages, with folder name auto-completion (using only the keyboard). Same for tags. Also includes a system of rules to suggest a target folder for saving messages; re-creates Eudora's Alt-Click; facilitates navigation in the 3-pane window; makes it easy to change between To/Bcc/Cc fields in the composer; facilitates tag-oriented operations. All that with the keyboard only!
The quickfix feature is nice, but it doesn’t give enough context around the search term that leads to use ag from terminal and switch back and forth between programs. I do this search dance every day and I’ve had it! There must be better way!