Currently constant contact account is access via OAuth2 API. And use https://api.constantcontact.com/ws/customers/ ... to access contacts. Now I want to use V3 api to access the contacts. How can I do that?
Thank you for reaching out to Constant Contact API Developer Support.
You can find our complete V3 API documentation at https://v3.developer.constantcontact.com/ and if you are upgrading from our V1 API, I would recommend beginning with the Getting Started guide that starts at https://v3.developer.constantcontact.com/api_guide/index.html
Please let me know if you have any other questions!
Tier II API Support Engineer
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