How to add reCaptcha 2 to Contact Form 7 (updated 2019)
CAPTCHA is an acronym for “completely automated public Turing test to tell computers and humans apart.”. If you post a form on your website, you will most probably start getting spam posts through your form. This is because there are “bots” (these are just scripts that just scrape through websites) that are coded to keep traversing the internet looking for forms to submit. Since you always read form submissions from your form, the spammers get to send you marketing messages easily.