I discovered that support(at)constantcontact(dot)com is no longer a valid e-mail. The valid e-mail for support is support1(at)constantcontact(dot)com.
Thanks for providing that information in the Community!
Please feel free to reach out if you have any questions.
Although this email address is used by our support team, we do not offer email support for our customers. You are more than welcome to post here in the community. You are also able to engage with us through our other support channels we offer. If you have any further questions please feel free to reach out.