Can you create a mailing list based on a relationship setting?
It depends what you mean by relationship status, but go to Search - Advanced search and choose &quot;Display results as&quot; - &quot;Related Contacts&quot; and then in the relationships section lower down make your choices. In the search results list there's an Actions dropdown at the top and one of the choices is Group - Add contacts. You can also choose Group - Create smart group if you want the group to keep updated by itself.
And then use that Group as your Mailing List.