Hello @user55542 ,
If the bot program acts like a contact normally would by triggering the coded tracking pixel for opens and rewritten URL for click tracks, then it's going to result in the skewed reporting. See my below comment for your options on how to best handle these problematic contacts.
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Hello @jbriskincanby ,
Unique email addresses are what denote a unique contact. If you didn't remove the old address prior to sending out the email, and it was part of the list being sent to, then it would still be sent the email.
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