The owner of the group I moderate raised a question about our monthly notice and its hashtag which I have been able to deal with, at least for now.
However, there remains an oddity that I have been unable to track down and work out.
The Monthly Notice is sent out with the hashtag #Guidelines, which is perfectly reasonable. As might be expected there is a Guidelines hashtag in the Hashtag Library. What there isn't (at least as far as I can see) is any Setting that allies this hashtag to the Monthly Notice. The hashtag is not present in the subject line of the notice itself, at least not when it is viewed in the Member Notices section.
The only thing I can see as a possibility (and it might even be a bug) is that the Monthly Notice is set to be sent as a Special Notice, and the Guidelines hashtag is also set to be sent as a special notice when used. Is it possible the Groups.io has put 2 and 2 together and come up with 4, albeit correctly in this case?
I simply cannot find where the "system" has been told to apply this hashtag to this message. I just hope the answer isn't so blindingly obvious that I ought to have found it...
Perhaps it's time for some more tests somewhere...