Important Notes:
The connector requires IMS Migration: To access the new editor, your Marketo Engage instance needs to be migrated to AdobeIMS(Identity Management System).
The connector works on the new email editor
Supports AEM ...
With a server side approach, you have a couple of options using the Marketo REST API:
Submit Form API
With this approach you’ll still need to create and approve a form in Marketo with the same fields as your custom form but you ...