Building the Feature Gmail Forgot: A DIY Inbox Cleaner

had 59,000 emails and no easy way to clean them. Native Gmail deletion is too slow, and third-party tools feel like a privacy risk. So, I asked AI to build a better broom. Here is how I collaborated with Gemini to write a custom Apps Script that turns Google Sheets into a secure, mass-deletion machine—giving me the 'Delete by Sender' button that Gmail forgot.