Heiya Sam,
first of all thank you for rectifying my changes to the description. I did not really understand what was meant with it in the first place but I guess that I figured it out by now.
I propose to add an example query for this to the "Usage" section of the extension's page, e.g.
{{ #ask: [[Category:News]] [[Recipient group::Tassie staff]] [[Approved for distribution::Yes]] |?Email=To |?News item |format=mailmerge |template=Newsmail }}
just to make sure how to use it. Even the above may be erroneous ...
Cheers