More information about the developer experience here: https://gsuite-developers.googleblog.com/2017/10/gmail-add-ons-framework-now-available.html https://gsuit

More information about the developer experience here: https://gsuite-developers.googleblog.com/2017/10/gmail-add-ons-framework-now-available.html https://gsuite-developers.googleblog.com/2017/10/gmail-add-o... Edit: Looks like you build the add-ons with Google AppsScript. Very similar to Microsoft Office + VBA, on the web this time. There's a CodeLab tutorial showing how to build a basic add-on that populates a Google Sheets file with receipt data from emails: https://codelabs.developers.google.com/codelabs/gmail-add-ons/#0 https://codelabs.developers.google.com/codelabs/gmail-add-on...