Tutanota unfortunately has the same drawback in that you have to go to the settings and register a new email alias before you can reply from that adress.
Presumably it's a client support thing, as in if you use a third-party client with Fastmail/Tutanova that does support it, they won't mangle the headers?
I'll get around to testing it I suppose, just not something I thought of or realised I'd lose when I switched away from Gmail.
Presumably it's a client support thing, as in if you use a third-party client with Fastmail/Tutanova that does support it, they won't mangle the headers?
I'll get around to testing it I suppose, just not something I thought of or realised I'd lose when I switched away from Gmail.