I just wanted to let you know that your certificate of https://v3.developer.constantcontact.com has expired.
Thank you for bringing this to our attention! I'm showing that the certificate was updated a few hours later and is now valid, but if you're still seeing otherwise, please let us know.
View API documentation, code samples, get your API key.Visit Page
Join our list to be notified of new features and updates to our V3 API.Sign Up