Is there a way to call API endpoint with out going thru oauth2. Like a simple api call just passing client_secret and client_id?   Thanks. ... View more

Currently I'm using this in my code:   https://visitor2.constantcontact.com/api/signup   I'm planning to migrate to v3. But always require the oauth. Is there other way to do it? Without redirecting to login (Oauth page).   Thanks. ... View more