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How to Prevent Duplicate Submissions in WordPress

Are you tired of dealing with duplicated form submissions? We totally get it. Processing data from all your submitted entries is already time-consuming. Existing duplicates create extra work you don’t need.

The good news is you can prevent duplicate submissions in WordPress with Ninja Forms for free, just like accessing them in your WordPress dashboard. Without further ado, let’s dive right into Unique Field which does all the magic on your form!

Prevent duplicated submissions in your form with the Unique Field

Ninja Forms Unique Field makes it easy for you to stop receiving duplicated submissions in your WordPress form. It ensures a designated field has unique data entered into it. Some examples of its use are to limit one submission per email address or limit a coupon code to a single use.

You can access the Unique Field from the Restrictions tab. If you don’t see a feature, you need to make sure Developer Mode is enabled. Turning it on will give you access to new possibilities with the free version of Ninja Forms.

unique field validation

Unique Field supports the following form fields:

supported fields for unique field validation

Prevent duplicated submissions based on the Email Field

For example, let’s say you want to limit submissions based on the user’s email address. To avoid duplicated submissions from the same email address, navigate to the Restrictions tab and select Email Field from the Unique Field dropdown.

email validation

You can also customize the Unique Field error message, so if the user tries to submit the form with the same email address, the error message will show up under the Email field.

unique field email

Want more examples of how you can use Unique Field to prevent duplicated submissions or create a single-use coupon code? Check our article Limit Submission Entries in Your Form By User, IP, or Date! You can even learn how to limit submissions by Date/Time with our Advanced Datepicker add-on!

No more duplicated submissions on your WordPress form!

We hope we took a weight off your shoulders now that you know how to prevent duplicate submissions in WordPress. If you are eager to learn more about form submissions, we have excellent resources that will walk you through everything you need to know:

Ninja Forms is your best bet if you are looking to manage your form entries. Unlimited forms, unlimited entries, and free access to your form submissions.

Download Ninja Forms today and see for yourself why we are one of the most user-friendly, drag-and-drop WordPress plugins on the market!