Hello EartheaS,
Thank you for reaching out to Constant Contact API Developer Support. My team is here to assist outside software developers with questions about building into Constant Contact's API.
The Client Secret for your V3 API key is generated on the “My Applications” page of the V3 API Developer portal: https://app.constantcontact.com/pages/dma/portal/
I’m including instructions for generating the Client Secret Below:
Please have a look and let us know if you have any other questions!
Regards,
Announcements
Join our list to be notified of new features and updates to our V3 API.
Sign Up