I too would pay even just for more storage, and an ability to manage E2E encrypted emails through them. @keybase.io / .com(?) emails would be awesome, especially if it could cross-contact a protonmail email (anyone able to send emails to protonmail accounts outside of protonmail, encrypted and decrypt the responses yet? never looked into this).
> anyone able to send emails to protonmail accounts outside of protonmail, encrypted and decrypt the responses yet? never looked into this
Yes. It's dead simple. Get your protonmail keys here [0], and on the contacts page, click the cog next to the user's email address to import public keys.
