Our theme comes with the integrated reCaptcha widget for contact form shortcode that helps you protect your email from annoying spam bots. Its setup takes just few minutes but will definitely save you lots of time afterwards.
If you decide to turn reCaptcha off, that can be also easily done from the Contact Form settings.
Check how contact form with recaptha looks here.
A CAPTCHA is a program that can tell whether its user is a human or a computer. You’ve probably seen them — colorful images with distorted text at the bottom of Web registration forms. CAPTCHAs are used by many websites to prevent abuse from “bots,” or automated programs usually written to generate spam. No computer program can read distorted text as well as humans can, so bots cannot navigate sites protected by CAPTCHAs.More info here