From time to time I will send group emails of stuff of general interest. For instance, last night I sent out the events for local Sections in spreadsheet form.
I always send out these messages in a format which does not send your email message to everyone. I also don't forward on adverts for services that are not of interest to y'all (in my humble opinion).
Therefore, if you aren't on the list of people that receive such messages just send me a private message from the forum and I'll add you to the list if you want to receive them.