I've launched a company-wide campaign about a month ago and have some questionable statistics showing. Of 362 sent emails, Sophos says only 124 were opened. So either 238 users never bothered to open the email or these numbers are off. Has anyone else got weird numbers like this? Thanks.
The Email opened data is tracked via. downloaded images in the email. If the organization blocks automatic downloads of image this may not show accurate results.
Here is how email open tracking works