[full name]
Works for (almost) all cases IMHO. You can drop your last name if there is a slight relationship or less formal. And I just drop down to -[first name] after the relationship is there and for ongoing conversation/threads. "Cheers" is nice but don't think it hits as well in US.
Usually just my first name unless it's formal and introductory, as my email will come from First Last as the sender already.
Cheers is fine in the US I think, but I at least assume the speaker is British or Aussie. If I know they're American, it comes across a little pretentious or inauthentic IMO...same as when Americans say 'the states.' Makes me roll my eyes but not like day ruining or relationship affecting.
Thanks for understanding.
Thanks in advance(for a question or quote)
Thanks for reading (for notification)
If I were to deliver bad news or price increases or something, which I don't currently have to do thankfully, I'd probably go with best as well.
I always want to do that with people I don’t work directly with. But I’m not cocky enough yet.
Like, if ordering someone to do something for you, thanks in advance would seem arrogant or even rude.
When asking a question or seeking advice, it to me feels more polite.
That said, I'm far from an etiquette guru, just thinking out loud.
What is it supposed to mean? "All the best"? "Best wishes"? Why not just say that?
Depending on the rest of the content I would probably assume either that someone was going for one of the above and didn't even notice that they a word, or that the author is a non-native speaker translating something from their primary language.