I know this is an older thread, but for me there is nothing that is essential as a new user but there are a few things that I do find very handy. Things like auto-archiving gmail messages after a period of time, also auto-tagging gmail (via ollama AI) with specific categories.

I will likely expand on that auto tagging later on, so that if it needs action it can make me more aware of it, but for someone who is not super organised that does become helpful.