Expense It! -- Gmail Add-ons Codelab Quickly add expenses from email receipts to a Google Sheet, all without leaving Gmail. This project is an example of a Gmail add-on, which can extend the Gmail interface and communicate with external services. It is written in Google Apps Script . The full version of the project is available for public use and can be installed from the G Suite Marketplace. Getting Started You can follow this codelab to build a simplified version of the add-on. Usage After installing the add-on from the G Suite Marketplace, open Gmail on desktop or mobile and find an electronic receipt. Click on the icon vaguely resembling a receipt: . A form for specifying details about the expense will appear, with the fields already filled. Edit as necessary and submit the form, thereby adding information to a spreadsheet. You can also create a new spreadsheet from within the add-on. License This library is licensed under Apache 2.0. Full license text is available in LICENSE .