Welcome to the worst home page in existence.
No dragons were harmed in the making of this page (as far as I know).
The only things here are:
3. Remove University warning about external email
from the top of messages when you reply to them
Version 1.3 updated 2024-02-01
to include "You don't often receive mail from..." warnings too.
Thunderbird extension. Open the Add-ons list (or "Extensions & Themes") in Thunderbird and drag the "yellow-1.3.xpi" file onto the Thunderbird window.