Every time a new Trello card is created, Integromat will automatically validate the email in the card with ZeroBounce. If the email status is "valid" it will get that person's data using Clearbit and create a new contact in LionDesk. It will then send a Slack message. If the contact already exists or no result is returned from Clearbit 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.