Here in G2G "flag" means red flag and means someone has become offended at what was written there
I think when you undertake, either of you, Dieter or Helmut, the translation that you POST the notice immediately that you are doing so ...
this advisement of your activity will be sent outward to anyone who did not opt out to be notified of any response(s) --
[ ] Email me and no notice is sent
[X} Email me and notice is sent