The server is configured with environment variables. See [server/config.js](server/config.js) for all options and [docs/docker.md](docs/docker.md) for examples.
Firefox Send localization is managed via [Pontoon](https://pontoon.mozilla.org/projects/test-pilot-firefox-send/), not direct pull requests to the repository. If you want to fix a typo, add a new language, or simply know more about localization, please get in touch with the [existing localization team](https://pontoon.mozilla.org/teams/) for your language or Mozilla’s [l10n-drivers](https://wiki.mozilla.org/L10n:Mozilla_Team#Mozilla_Corporation) for guidance.
Pull requests are always welcome! Feel free to check out the list of ["good first issues"](https://github.com/mozilla/send/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22).
The android implementation is contained in the `android` directory, and can be viewed locally for easy testing and editing by running `ANDROID=1 npm start` and then visiting <http://localhost:8080>. CSS and image files are located in the `android/app/src/main/assets` directory.