Hello @dchwealth ,
If their network or email program uses some kind of security tool that "opens" emails and "clicks" their links to check for malware, it can result in that kind of data. I'd advise making sure your account is set for self-authentication, to make the email programs better trusting of the emails you send through us. If you have further issues regarding your delivery, I'd advise speaking directly with the Delivery team.
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