'Cheers', 'all best', 'warm regards' - having to choose the best way to sign off an email is a minefield. There are few elements of modernity as vexing as the question of how to sign off from an email.
It's an easy task if you want to look like a passive-aggressive tosser, but if you don't, it's one of the most fraught decisions you'll make - and you have to make it over and over again, every day, knowing that if you slip up you might find yourself on the end of a workplace harassment complaint or scathing mockery from colleagues. I always use 'kind regards.' Which email sign-off do you use for what occasion?
(via Nag on the Lake)