Hi @ShannonH501 ,
I do apologize that you are running into that! It is possible that one of the contacts has your email address safelisted, while the other does not. It would be advisable to have the contact who is not receiving your emails add you to their safe sender list. We also always recommend having the recipient safelist Constant Contact's web domains and IP addresses in their security program.
If those steps have been followed and there are still delivery issues, I would advise reaching out to our Delivery team at 1-866-433-8499. They are the best people to troubleshoot these situations. They are here during the following hours:
Monday-Thursday: 6 a.m. - 8 p.m. MT or 8 a.m.- 10 p.m. ET
Friday: 6 a.m. - 7 p.m. MT or 8 a.m. - 9 p.m. ET
Saturday - Sunday: 8 a.m. - 6 p.m. MT or 10 a.m. - 8 p.m. ET
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