i want something that works with thunderbird since i'd rather not have to use a webmail client
@DarkWitchClaire You can give posteo.de a try, have been happy there for a while. I hear mailbox.org is good, too - but I haven't used them.
Both of them cost the same at 1€/month
@DarkWitchClaire protonmail does have a bridge application available to paid accounts, currently windows and mac with linux in beta
other than that I don't know, hushmail might be something to look at maybe? don't have any experience of them though