My idea is that you make it possible to have all emails encrypted by default with a gnu privacy guard or open pretty good privacy key. preferably the gnu privacy guard though.
You just upload your key whether ecc or rsa and on the web its encrypted. but if you use say thunderbird or some other enigmail supporting email client, you can decrypt it with enigmail when needed. just a thought I wanted to run by you guys. If you do this, it would doubtless be popular among gnu/linux users. Posteo.de already does this kind of thing so I thought I would throw it to you. but they have a weakness, No cloud storage xD which is why I am likely sometime this year going to buy storage if possible.