I need proxy support for K9 (socks proxy is probably only possible for imap/smtp. so socks). How to enable it? I saw here Socks Proxy Added by mirsamantajbakhsh · Pull Request #3882 · k9mail/k-9 · GitHub that socks support is already added, but can not find that option. I installed k9 from f-droid version 5.739.
Proxy support is very important as in some countries providers block access to certain mail services.