Every Gmail reply quietly carries the whole conversation underneath it. On a long thread, your one-line reply drags 60+ old emails along, and everyone has to scroll past them to find what's new. ThreadTrim removes the old quoted emails before you hit Send, so only what you wrote goes out. Works with Reply, keyboard shortcuts and pop-outs, with one-click Undo. Runs entirely in your browser: no account, no servers, no tracking. Free for 20 trimmed replies a month.