Well done, @Tutanota! However, there is one error. You said that it 'can only be accessed by one single person: You'. (This is wrong since the recipient can also read it.) I agree it is a triviality but I just pointed it out for the sake of technicality. π While I applaud your unique approach to encrypting emails, have you been audited by an independent security firm?
@sudo For sent emails, yes, for all other data, it's just you. ;)