Dear Miss Snark:
Over the past two years I have had the opportunity to correspond with a variety of agents, editors, publicity-types, producers, etc. I've noticed that EVERY SINGLE ONE OF THEM (except one male editor) used "Best"to end their emails, letters, cards, etc. Do you, Miss Snark, use "Best?" I've never this used in any other industry. I prefer "Sincerely" myself.
If you are my agent, please disregard.
Okay. I will go back to writing again.
Best as Miss Snark can tell, it derived from "best wishes" or "best regards" and in fact is the universal sign off in publishing. Miss Snark of course does not use such a mundane closing, no no.
If Miss Snark likes you and hopes the conversation will continue she closes with "fondest felicitations from your most devoted correspondent"
If Miss Snark is hoping you will lose her address both street and email, she closes with "Farewell Oh Amazing Delight", hoping the subliminal message will register.