E2EMail is not a Google product, it’s now a fully community-driven open source project, to which passionate security engineers from across the industry have already contributed.
Contrast that with their Github repo, which has seen no commits since August, as well as pull requests and issues that nobody has responded to.
I would dearly love to be proven wrong; if there has been ongoing work from "passionate security engineers" somewhere else and I'm just missing it, hopefully someone can post some details here?
(edit: Disclosure, I work on Mailpile, which is arguably a "competitor" to both e2e and GMail. But I did genuinely want to see this project succeed and improve e-mail security.)
https://github.com/e2email-org/e2email/commit/434f99c66efe49...
Hopefully there's more to come! :-P
(Never worked in Google, but it may be easier for interested employees to contribute to external open-source projects than internal projects with no resource allocation.)