E2EMail is a simple Chrome app – a Gmail client that exchanges OpenPGP mail
github.comMailvelope is a much better choice if your goal is to interact with the existing OpenPGP ecosystem; E2E was using ECC keys only if I recall, which makes their crypto incompatible with many other OpenPGP setups.
The E2E promise was that with Google's backing, suddenly millions of people would/could encrypt and PGP would take a big step forward, making some forced upgrades in the rest of the community worthwhile. That is seeming less likely to happen now.
That's what I use on my Chromebook, works well so far.
It looks like Google just pulled the plug on this: https://security.googleblog.com/2017/02/e2email-research-pro...
HN submission: https://news.ycombinator.com/item?id=13728327
(Genuinely hoping someone will find the good news I'm missing here)
Perhaps the silver lining here is that people will not focus as much attention on trying to secure email with message encryption, and move to better protocols.
This attitude is harmful. Although new and better protocols is a worthy area of research and development, we should also improve the tools people are already using.
Note I said research: I do not consider the current crop of secure messaging protocols to be viable alternatives to e-mail, as they all suffer from extreme centralization. Allowing unicorns to own and monopolize global infrastructure may appeal to silicon valley insiders, but it's not something the rest of us should be promoting.
This is pretty cool! Just recently I started working on something similar, but for IMAP (using PNaCl under the hood). Glad to see others find the same idea interesting.