I succeeded on a nice and working setup with Newsletter plugin and Feed By Mail extension. Only one thing does not work. Blocking content in the Feed By Mail configuration window does not block anything.
Then I tried to add another plugin WordPress Access Control. This works fine for the blog itself, but now the newsletters shows no content to both members and non-members.
Are You aware of any working solution or can you recommend a membership plugin that is known to work with Newsletter?
Aside from that. Very nice work!
Best regards ..