I was wondering if there exists an API which can be used to actually create a Mashery account using your Constant Contact account's username and password?
It would be great if you could subsequently retrieve your API key and access token, or just retrieve the key and token if you already have a Mashery account, using your Constant Contact credentials.
Thank you for reaching out to Constant Contact's API Support.
Mashery it a third party company that we use to manage our API Keys. Using an API to create/retrieve API Keys would have to use Mashery's API and as of now there is nothing set up to do this. I will see if they have anything already created for this and what is needed to implement it.