If you are eligible for winter break but are required to work because you provide an essential service, your supervisor will notify you well in advance.
We had someone today that sent an inquiry about something (this person is not a client, more of an outside business partner). Dude sent, within about an hour and a half time frame, 7 emails. Calling out one person on the DL multiple times within a half hour, then proceeding to call out the rest of the DLs (ALL in the original copy list) to try to get an answer to his question.

Automated email messages generate a 70.5% higher open rate and a 152% higher click-through rate than standard marketing messages. Briefing what would be the next step of action gives customers transparent information.
As a result, our text-based work communication has morphed into a series of strange, stilted, passive aggressive, and performatively upbeat exchanges. Much of the actual text of work email exchanges is ornamental filler language filled with exclamation points and phrases like “just looping back on this” that mask burnout, frustrated obligation, and sometimes outright contempt (the absolute best example of this is a wonderful 2015 post titled, “Just Checking In,” where writers Virginia Heffernan and Paul Ford write fake emails in this vein to see who can cause the other the most panic).