Prevent bot/spam form submissions
In this article:
Use the reCAPTCHA option
You can reduce form submissions from bots/spam by including the reCAPTCHA option for your form. To set this option up, check the "Protect with reCAPTCHA" box in the Form Settings area as you're building a new form or editing an existing one.
Preview your form with the reCAPTCHA option turned on
To view what this option will look like to someone who's completing the form, click on the View link next to the form on your Active Forms page:
Here's an example of how the form will look: