[cosmodisk]

I had this issue when I had a larger team to manage. I'm also one of those who remembers an email that was sent 3 years ago by some random guy listing all these useful things. However,it doesn't work for most people. The communication needs some guidance too 1) anything quick and simple- chat 2) something more complex - email 3) something complex and likely to stay relevant long in the future - knowledge base, documentation, etc 4) major announcement- medium matters less but they need to be stored somewhere for people to refer to later.

Communication requires enforcement too: I had people in my team that kept saying that they weren't told about x,y,and z. If those are repeated behaviours( they usually are), they need to be managed accordingly so people would start take it seriously.