Hello user4557894,
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.
Our current authorization code has a lifespan of 5 minutes. You should only need to authorize your application/integration on an account once, as after this step has been completed, your application/integration can maintain account access by utilizing refresh tokens. Below I’m linking our current documentation for the Authorization Code OAuth2 flow, as well as overview documentation for all of our V3 API’s available authorization flows.
OAuth2 Overview:
https://developer.constantcontact.com/api_guide/auth_overview.html
OAuth2 Authorization Code Flow:
https://developer.constantcontact.com/api_guide/server_flow.html
Please have a look and let us know if you have any other questions!
Regards,
... View more
