Even though Mutt, Alpine, Sup and Notmuch might work great for some people they seem to be accessible only from a terminal, emacs, etc and very text heavy. As much as I love spending time on the terminal, I prefer a GUI app for my email.
Postbox unfortunately doesn't support Linux, besides that while I don't mind paying licences for great software, it doesn't look like Postbox is fully opensource [1].
Postbox unfortunately doesn't support Linux, besides that while I don't mind paying licences for great software, it doesn't look like Postbox is fully opensource [1].
[1] https://www.postbox-inc.com/coveredcode