In Communicate->Recent Messages, only the resolved email addresses are shown.
We have a number of mailing lists that are similar… However, we’re trying to educate our Troop which are correct for which.
Since the Recent Messages only shows the expanded mailing list, I can’t tell if the correct “Custom Mailing List” was used by the sender.
Please add the original To: information (before expanding to email addresses) in addition to the expanded list.