Every time a custom webhook is triggered, Integromat will automatically create a new Trello card and validate the email output from the custom webhook using ZeroBounce. If the email status is "valid" it will look the person up with Clearbit, create a LionDesk contact, and send a Slack message. If the contact already exists 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.