Definition of an Email Open
The definition of what an email open means.
Email opens are the number of times an email was opened by the receipts. This count applies only to those emails sent through the email marketing campaigns and doesn't include the open count of any other type of email.
Also please note, this count is not a 100% accurate since it relies on the receipt having their images enabled/turned on in their email without that we can't record it as an open (unfortunately there is no way around that). So the total number of opens for this statistic is usually lower than what it actually is.
To recap, for emails sent through email marketing campaigns, every time one of those emails has images enabled and is opened this is recorded. The weekly total of the number of opens is displayed in our weekly stats email.
For example if I had 100 emails sent out through a campaign and 75 people opened those emails (with images enabled), then my open count would be 75.