In order to get started with Marketo Integration you need to complete some steps:

1) You need to do the Getting Started Step so you can get the Client Id, Client Secret, Identity URL and Rest URL. Make sure that your API Role has checked the API Access.

2) Create a Program named "Viral Loops" at the Marketing Activities section and under the Newsletter folder.

3) If you want to enable the Sync Contact Feature you need to create a webhook on Marketo app. To do that you have to follow the Webhooks Documentation. In the URL Section Paste this URL -> https://app.viral-loops.com/api/marketo/subscribed?apiToken={apiToken}&email={{lead.Email Address}}&firstname={{lead.First Name}}

and make sure you replace the apiToken with the one from the Installation Step.