CiviMail reports track unique opens and total opens, but after upgrading to 4.7 line, suddenly all mailing register 0 opens. I have testing and opened a test email and CiviMail does not register the open.
Has anyone else noticed this or have an idea why this could be happening?
We are on HostGator shared hosting and have the latest version of Drupal and CiviCRM.
Thanks for any ideas.