[Tyr42]

Mailvelope [1] has ok support in gmail for pgp.

http://www.mailvelope.com/

[chmars]

Thanks!

I'm not sure if mail encryption in the browser is a good idea, especially with regard to the protection of private keys …

And I'm wondering why Mailvelope doesn't support mail signing?

> Mailvelope currently does not support signing of messages.

[claudius]

Probably because you have to make absolutely sure that the things you sign are actually the things sent by the webmail provider, and if they decide to add random stuff, the signature will fail. Encryption is, in some sense, easier.