I'm so sorry that happened, I understand that it is important to not have emails duplicated in your account. To troubleshoot this issue, we do need further information, so can you email us at social_support(at)constantcontact(dot)com, with your username, a reference to this post, and the contact's email address where he received two emails. Also, if you could include the name of the campaign that was sent to him twice, that would help too. Thanks in advance!
Gwendolyn B Customer Engagement Specialist If you find my post helpful, and it answers your question, please mark it as an "Accepted Solution" by clicking the Accept as Solution button in the bottom right hand corner of this post.
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