You can probably do it with a cron job and an sh script
Implement Invisible reCAPTCHA from Google
With Spam be Gone I noticed that implement standard recaptcha from google is super easy, butI haven't been able to install Invisible reCAPTCHA that doesn't even display the "I'm not a robot" dialog box. If in the future nodeBB could support it, it would be great. Thanks.
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