Hi Patrick,
The first figures that you included:
Sent 1st Email: 75 Opens
Sent 2nd Email: 99 Opens
Or these taken from the email report or are these the number of leads in smart lists?
If they are the numbers from a report then what you may not yet know is that the opens column has some additional logic behind it that caters for "implied opens"
It counts any lead that has:
opened the email
OR
clicked a link in the email
OR
unsubscribed from the email
The reason behid this logic is that Open email activities are logged when a tiny image is detected as having been downloaded. Some email clients have image blockers, this prevents the opens email confirmation. But if someone clicks a link this is still tracked. If they clicked a link this implies that they must have opened the email.
More InfoIf this doesn't match your scenario let me know or even better log a case with support and include links tot he campaign and we can look into it.
Regards,
Cathal