- Execute a `clasp push` to upload the source code into your project
If everything went well you now should have your `config.js` and an `app.js` inside your App-Script project. (In the web-UI they are called `.gs` files instead of `.js`.)
Now you can execute the `executeMailCleanup()` and `applyFilterDefinition()` functions to apply your config. If you want a more automated version you can define project triggers inside the `Edit` menu for those two functions. For example you can set up a daily cron for them.