Should a note be addressed with "Hi all" or "Hi All"?
It is common to begin an email with the greeting "hi all" when the note is addressed to multiple recipients.
What, however, is the correct capitalization of "all" in this context? Does it become a proper noun?
Solution 1:
I wouldn't capitalize "all". Collections aren't used as a proper noun. If you were to say, "Tell them to come here in 5 minutes.", you wouldn't capitalize "them".
That being said, I really wouldn't start an email with "Hi, all". There's technically nothing wrong with it, but it feels odd.