Delete more messages, more often. There’s a lot of stuff that I don’t really need to know, and absolutely don’t need to act on.
I only need to archive the final message in a thread.
As Brian Oberkirch suggests, make “no” the default answer to requests.
At work, create a “WFH” subject line filter in Outlook that drops those messages into a separate folder. I almost never need to know that one of my colleagues is working from home.