Sort your mail.
Download mailsort
Downloaded. Now the forty-second part.
- Unzip it. Right-click, Extract. Yes, really.
- Paste
chrome://extensionsinto the address bar
Edge:edge://extensions. Websites aren't allowed to open that page for you. - Switch on Developer mode, hit Load unpacked, pick the
mailsort-extensionfolder.
Then open Gmail. Chrome may grumble about developer mode when it starts. That's Chrome being Chrome. Say keep.