David, Thank you for your message. I have one more question regarding API V3. I'm following the steps here for server_flow Oauth2.0: https://v3.developer.constantcontact.com/api_guide/server_flow.html In step 4, I'm not sure where to find "client_secret". I went to "My Application" but all I see is API Key which is "client_id". Where is client_secret ? Thanks, Meysam.
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