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One of my marketers is getting unsubscribed from the newsletter that she updates every day. She mentioned that when someone else does the updates, she doesn't get unsubscribed, so we looked at how she was updating and testing her campaign.

We discovered that if she tests the links in the proof she sends to her email, then she doesn't get unsubscribed. However, if she tests the links in the content area of the campaign, she gets unsubscribed even though none of the links she tests are for unsubscribed.

Has anyone else seen this problem? Where do you test your links for your emails?

Hi Martha,

Typically, we see this kind of behavior with corporate security filters where unsubscribe links are checked by the software, which triggers an unsubscribe event. This is the same mechanism that sometimes causes recipients to show link clicks and open events for email campaigns immediately upon delivery. Unsubscribe links do not work in proof sends, so that would line up with the expected behavior.

I would first suggest checking with your IT team to see if they can confirm that all links are checked by security filters, and if your team needs help with further investigation, please follow up with a support ticket at support@iterable.com.


Thank you. I will have to investigate more. I haven't heard of anyone else on that team having this problem, but I don't know if they have all just been checking in the proof instead of the content area.


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