Tools for support folks that should come out of the box but never do :-) part 8888 Espanso and Keyboard Shortcuts (AutoHotKey on Windows, built-in app on macOS) for github issues, bugzilla links, etc etc :-)

Heavily customized for my needs but easily customized to yours :-) :

:hamburger for Thunderbird app menu SUMO KB markup
:warmgreet for a randomly picked greeting
:warmclose for a randomly picked closing
Command+Control+z for a Zendesk ticket link For this and the following links, if you also hold down shift i.e. Shift+Command+Control+z it will do HTML links as well as markdown links
Command+Control+y for a Notion link
Command+Control+g for a Github issue link
Command+Control+u for a Bugzilla bug link
Command+Control+l for a link to a page where our cursor is focused like this in Markdown [title of current tab )[url of tab]