Good morning, My goal is to automatically add a contact to constant contact once a user signs up for an account. With that being said I have seen a couple of examples on support about the C# V3 API. They all start with something along the lines of an authorization code. Which is the one part I am struggling to get. I've created an application and authorized it but I am not sure where that information comes from. How long is the authorization code valid? Do I need to implement some sort of refresh logic? Thanks!
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