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One User, One Submission: How to Stop Form Abuse in WordPress

The problem

Some users submit the same form again and again:

  • to get multiple replies
  • to bypass limits
  • by accident

Over time, this creates noise, fake leads, and useless data.

The solution

Duplicate Killer gives you full control over how often a form can be submitted.

You can:

  • Limit submissions by IP address for X days
  • Block re-submissions from the same browser
  • Prevent duplicates per user, not globally

This means multiple users can submit the same data — but a single user cannot repeat themselves endlessly.

Perfect for

✔️ Contact forms
✔️ Lead generation
✔️ Surveys & sign-ups
✔️ Booking or request forms

No complex setup.
No extra services.
Just smart limits inside WordPress.

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