[bainsfather]

I've just signed up for this. It looks like exactly what we want from 'secure' email:

(0) you can send unencrypted email just like any other webmail service.

PLUS

(1) end-to-end encrypted if sender&receiver use tutanova.

(2) if receiver does not use tutanova, you can still send them encrypted email if you want to: they get an email saying - 'you have an encrypted mail, click this link to view it' - on clicking the link, they decrypt the mail by entering a pre-agreed password.

(3) it is free. they seem to be making money from the 'enhanced features' in their 'Outlook Addin' package.

[e12e]

I don't know, it's missing (4) "Host your own (encrypted or not) email" ?