When a superior emails me to 'let me know' of something (e.g., Dear Bob, I'll be absent of the Tuesday meeting because of x.) I don't know what response has a proper tone, or if it's just OK to not respond.
My thoughts are that: "Got it, thank you.", "Message received, thank you.", and "Ok, thanks!", sound like things a superior would be responding me (rather than the other way around).
Thus, my questions are:
1) Is it ever OK to just not respond?
2) What response would be proper for a superior to 'confirm' the receipt of an email that does not ask for a reply, but not so proper that it sounds obsequious - or that you're a sycophant?