Sugar Market has an out of the box easy to setup double opt in process. When a form is submitted the system sends out a generic opt in email allowing the person to opt in to future communications. However you can also build your own double opt in process with branded emails and data that maps directly back to your CRM. Here is an example of a form submission requesting a case study.
Form - The form can be setup to capture key personal data and add the record into a double opt in nurture flow
Nurture - Here are the key steps for the nurture flow:
Here is an example of the nurture flow.