Are Open Rates Unique?
Hi,
I'm currently running a nurture program on Marketo. When I look at the email performance result to see how we're doing I notice that the number of emails sent gets bigger. For example, our nurture program is divided into 3 streams. When I looked at the number of emails sent in the first email for stream 1 (Stream 1 - Email 1) I saw that the number was 100 but when I looked back at Stream 1- Email 1 a week later I saw that the number went up to 120. This behaviour was replicated in the number of emails opened. Given that the number of emails sent and opened are getting bigger each week i.e. it's cumulative, how do I know that the open rates are unique? If they are not unique, how would I find the unique number of emails opened?
Thanks for your help in advance!