Gmail Cleaner

Cleans your Gmail inbox for you.
Using greasemonkey (this is a greasemonkey script which requires Greasemonkey or Tampermonkey to work)

Steps. Add Script.
open Gmail. It stays out of your way unless you want it active.

Adds a toolbar to the bottom of your Gmail with the word Start

clicking Start

1: navigates to mail.google.com
2: opens the first email.
3: waits 5 seconds with it on screen.
4: does a search for the sender for that email
5: chooses ALL the emails which match that sender
6: deletes all matching emails
7: returns to main inbox.

you have buttons to make it slower or faster as well as a Borked button if something breaks