Invisible reCaptcha for WordPress combines Invisible reCaptcha by Google with your WordPress site.
With this plugin, you can:
- automatically bind the challenge to a button,
- programmatically bind the challenge to a button or invoke the challenge,
- programmatically invoke the challenge.
Once you select the type of challenge, you can add it to your Contact Form 7 forms. Here, only the most suspicious traffic will be asked to solve a captcha.
Furthermore, you can also customize your security preferences and add multiple captcha on the same form.
Contact Form 7 Extensions can give users many of the functions available in some of the well-known premium form plugins.