I have created a custom sign up form for my website and I would like to know how I can ask them to subscribe to my newsletter? My guess would be that I have to work with the API. However I do not know where to find my API key. Where do I find it?
The api key to be used with our api extension is just a secret token you set in the extension. If your signup form creates a WP user you can user the wp user intergration extension and add a checkbox named “newsletter”. Of course your signup must call the wp specific function used to signup a user so those events can be intercecpted by Newsletter.