I have been using readnotify and getting tracked email details.All of them were giving me info until saturday when they were opened about 15 times by the recipient.Everytime they read the email it didn't give me the browser details ie if they were read on a phone or a computer.Could it be the emails were hacked or were they definitely read by the recipient?...if I had got the browser details I would definitely know it was them because I know what phone they have and computer...any advice would be much appreciated