bozdoz

<a href="https://wordpress.org/plugins/jetpack/" rel="ugc">Jetpack</a> makes it easy to add contact forms to your WordPress site, but you may want a simple way to add a <a href="https://www.google.com/recaptcha/" rel="nofollow ugc">Google reCAPTCHA</a> to prevent spam. This plugin will manipulate the Jetpack <code>[contact-form]</code> shortcode to prepend the Google script, add a button, and parse the response.
This plugin allows both reCAPTCHA v2 and invisible reCAPTCHA (see screenshots and choose whatever works for you!).
Shoot me a question about it on Twitter: <a href="https://www.twitter.com/bozdoz/" rel="nofollow ugc">@bozdoz</a>.
This plugin is open source on <a href="https://github.com/bozdoz/wp-plugin-recaptcha-jetpack" rel="nofollow ugc">GitHub</a>!

reCAPTCHA Jetpack

A simple plugin that adds a Google reCAPTCHA to the Jetpack contact form. Requires the Jetpack plugin.

Dominik Schilling

required

This plugin helps you to declutter your WordPress admin by removing all Jetpack related notices that promote services like the backup services VaultPress, WordPress Apps or Blaze.

Jetpack Without Promotions

WordPress dashboard is a stage for abusive use of screen estate. The fact that Jetpack, a plugin by the company that confuses itself with WordPress, is leading the way in this abusive use is just wrong, a shame really, and setting the wrong example for all plugin and theme authors.

WordPress urgently needs a way to put this nags where they belong: the plugin/theme specific settings page or some kind of notification center.

Thank you Required for helping to clean up. It is not a definitive solution but it is a welcome panacea.

The plugin that should not be

Removes all admin notices for promotions added by Jetpack.

reCAPTCHA Jetpack vs Jetpack Without Promotions