It is possible to "unpublish" subscribers temporary so that they do not get a blog post by email notification when I want to do a test blog post.
Also, when I uploaded the CVS file, did all the subscribers get an email notification? I did not want this to happen as I had not yet changed the text in the email notification and it still had your default text & logo.
I should of had warning that this would happen. I found nothing in your documentation clearly explaining what happens.