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reCAPTCHA v2
reCAPTCHA v3

reCAPTCHA v2

This plugin supports the reCAPTCHA v2 "I'm not a robot" Checkbox which will exist on your HTML form:

Checkbox

Start by creating a site or using an existing site in the reCAPTCHA Admin Console. Retrieve the site and secret keys from the site's settings page:

Site Keys

Follow the reCAPTCHA docs to add the reCAPTCHA v2 widget to your site's HTML form.

When the user submits the form, Postform will verify the user's checkbox response token by checking the g-recaptcha-response POST parameter.

Plugin configuration

In order for Postform to verify the user's response, it needs to know your site's secret key. Copy the secret key from the site's settings page (shown above) and paste it in Postform's configuration dialog:

Configure Plugin