And what tools would you recommend using instead of email at this juncture? I have yet to see anything that's a viable alternative for the use cases I mentioned

And what tools would you recommend using instead of email at this juncture? I have yet to see anything that's a viable alternative for the use cases I mentioned, let alone a preferable one. And no, a big chunk of text is not anything like spam if it's part of a conversation, nor as an announcement to one's own team or to other parties who have requested it. Length of communication is not correlated with value or desirability.