Some of our ministries have seen reduce open rates since early October which may correlate to the last ACS upgrade.  I have looked into the tracking log for some deliveries and I know there are missing opens.  Since I receive many of the emails and open all of  them and I don't have an open I know its missing.  I still have the emails in my arch box and verified I read it.

Before I go through a long process with support I want to see if anyone else has noticed this.

Thanks John