Ah! Thanks for the (very quick!) clarification. So just when I want to send out a new newsletter, I can filter the users to just those whose Membership Pro status is Active?
I recently discovered one member whose membership had expired but who was still included in an acymailing list. This may have been one rogue one perhaps from a long time ago but I was hoping to filter the acymailing users to show if there are any others whose membership in Membership pro had expired. Is there any way to do this?
Also, does this filter on Membership Pro Subscribers or Membership Pro Subscriptions: I have 'Subscription Renewal Behavior' set to 'Create New Subscription' in Membership Pro so old subscriptions are left there as Expired and a new Subscription created each renewal, so this leaves old expired Subscriptions - are they counted in the acymailing filter?