Thanks for the reply.
It is interesting that you say that there is no difference in how the email is sent and delivered.
Our experience and the reason we hesitated to use v9 is that the newsletters always ended up not in the primary inbox but in the same place where all of the MailChimp and Constant Contact newsletters go automatically.
Our experience with v5 is (even this year with the recent changes you site) that these newsletters get delivered into the primary inbox.
If you are saying that there is a way to get the v9 newsletters to go to the primary inbox, then this is helpful but I need to know what to do in order to make that happen.
Thanks in advance.