That’s not going to work, for a couple of reasons:
- Not every DWG person is a member of the group that you “@ed” here.
- Not everyone in that subset who is in that group here will get those notifications - some may have them turned off (because of the documented ways to contact the DWG, this isn’t one) and some (including me) are in email mode so I literally won’t see anything until I connect to the site and notice a funny icon I don’t recognise.