Since Unbounce sends along the page ID and variant letter for all your new leads by default, you can now start sending email campaigns targeted at leads generated through specific pages or page variants.
Log in to MailChimp.
Open the Campaigns tab.
Create a new campaign and click Send To Segment on the list selection screen
Select either Unbounce Page ID or Unbounce Page Variant and input the relevant ID or variant letter in the form
Click Use Segment and finish the remaining steps to start your campaign.
Note: Your "Unbounce Page ID" will be the long string of numbers and letters that you'll see in the URL when looking at your page overview in the app (https://app.unbounce.com/pages/THIS-IS-YOUR-PAGE-ID)