EDIT : Option to vote for Official F-droid Repository https://protonmail.uservoice.com/forums/945460-general-ideas/suggestions/47173612-official-f-droid-repository
EDIT : Option to vote for Official F-droid Repository https://protonmail.uservoice.com/forums/945460-general-ideas/suggestions/47173612-official-f-droid-repository
Yes. But Proton wants users to pay for their bridge to use IMAP with Thunderbird. Not sure if their bridge works with K9-mail and FairEmail.