Written in Google Apps Script. It takes user/customer data from a Google Sheet and writes a personalised Gmail draft to each of them.
Walkthrough of how I made it can be found at blog.samebug.io
- Part 1: https://blog.samebug.io/automating-letters-to-users-with-google-apps-script-part-1-e311dfa1eb3a
- Part 2: https://blog.samebug.io/automating-letters-to-users-with-google-apps-script-part-2-40d8a7b276a4
- Part 3: https://blog.samebug.io/automating-letters-to-users-with-google-apps-script-part-3-123ab0b8f84f