
Duplicate Killer – Prevent spam and stop double entry submissions for Contact Form 7, Forminator and WPForms Lite plugins.
by wpnia on WordPress.org
Duplicate Killer will prevent double entry submissions for Contact Form 7, Forminator and WPForms Lite plugins. This plugin can be used to ensure that …
(3)

Settings page.
*Duplicate Killer it’s the easiest way to ensure that a designated field has unique data entered into it. With this plugin you can stop duplicate entries for Contact Form 7, Forminator and WPForms Lite.
Extension for Contact Form 7 plugin
- Limit one submission per Email address, Phone or TextField.
- Customise error message for duplicate entries.
Extension for Forminator plugin
- Create your best list without duplicates!
- Choose the unique fields from Email, Phone, TextField.
- Warn the user that the value inserted has been already submitted!
Extension for WPForms Lite
- Duplicate Killer support one of the best free WordPress forms plugin.
- Stop your clients to duplicate the entries of your contact forms!
- Inform your clients when the value has been already submitted!
Unique entries per user
- You can prevent duplicates at the user level, not global.
- Multiple users can submit the same entry, but a single user cannot submit values they have already submitted before.
Store and display submissions
- Store all submissions from Contact Form 7/Forminator/WPForms to your wordpress database
- Display and manage the entries direct from your wordpress admin panel
Limit submissions by IP address
- This feature restrict form entries based on IP address for 7 days
- Warn the user that the value inserted has been already submitted!
Stores your files and images submitted through the form for Contact Form 7
- Enable this option to automatically store uploaded files from the form on your server.
Active installations1K+
Weekly downloads
401+258.04%
Version1.3.1
Last updated6/14/2025
WordPress version5.2
Tested up to6.8.1
PHP version5.6.20
Tags
cf7contact formdouble entryduplicateforms