Recreating the classic Google™ Inbox experience as a fully local Thunderbird extension that works with any email account.
Website: neoinbox.freakified.net
Install: addons.thunderbird.net
NeoInbox works with any email account, runs completely locally, and includes all your favorite classic Google Inbox features like a unified mail stream, bundling, trip detection, reminders, and more!
pnpm install
pnpm package # builds neoinbox.xpi
pnpm dev # rebuilds dist/ on change; load dist/manifest.json as a temporary add-on
pnpm harness # runs the UI in a browser on a fake mailbox
pnpm test # runs the automated tests! you love test-driven development don't you?Built on macOS 27 with Node 26.8.2 and pnpm 12.4.2; any OS with those versions should give the same output.
-
Install Node 26.8.2 from https://nodejs.org (or with a version manager such as
nvm install 26.8.2). -
Enable pnpm at the version pinned in
package.json:corepack enable -
From the source root:
pnpm install --frozen-lockfile pnpm package
The add-on's files are in dist/, zipped as neoinbox.xpi. They are built from
inbox.html, src/ and public/ (see vite.config.ts) plus the npm packages in
pnpm-lock.yaml. site/ (the project website), scripts/, dev.html
and src/eval/ are not part of the add-on.
pnpm source-zip packages the committed source as neoinbox-source.zip.
NeoInbox is an independent project and is not affiliated with, endorsed by, or sponsored by Google. Google and Gmail are trademarks of Google LLC.