Thanks for reaching out to us! Have you tried sending tests out to multiple email accounts? If you would like, I would be happy to look into this for you. If you could send us an email with the name of the campaign you are working on and the email address you are testing with to communitysupport(at)constantcontact(dot)com, we would be happy to do some troubleshooting!
And thanks for the answer. Ive tried several accounts and get the same problem. Ill try sending it to the email account youve provided. Thanks!