To which I reply "Barnyard Material!"
THESE PEOPLE ARE NOT OUT TO SAVE "BUZZWORD BANDWIDTH". . . THEY ARE OUT TO CONTROL YOU. . .DON'T LET THEM.
"Netiquette" is something THEY have invented TO CONTROL YOU!
All you have to do is remind them that each individual has a most powerful protection against anything they don't want to see. . .THE DELETE KEY!
You will probably also have to remind them, sometimes in the manner of using a different platform to speak from, if their response is not to post your messages, that:
"SINCE EVERYONE HAS THEIR OWN DELETE KEY, THERE IS NO NEED TO DELETE THIS FOR THEM!
Chapter 10
TPC, The Phone Company
Those Who Would Be King, Part IV
My apologies for using the United States as an example so many times, but…most of my experience has been in the US.