Every time a new form is submitted on Formstack, Integromat will automatically validate the email with ZeroBounce. If the email status is "valid" it will look the person up with Clearbit and if there is a result it will create a contact on LionDesk. If the status of the email is "invalid" it will send a Slack message.
This is a predefined template that will make the creation of your scenario much easier. Of course, you can always expand and customize the scenario to meet your own individual needs.