Form builders can add a confirmation email input to an Email element. This requires form submitters to validate that their email address matches their original entry.
Instructions
Navigate to the Forms tab and select the applicable form or create a new form
On the Builder tab, add an Email element to your form
Add a Label for the element
Expand the Advanced section and enable the Requires confirmation toggle
Click Save on the form
The confirm email field will now display
Note: The confirmation field name will use the label you added to your email element.