Exclude email addresses already captured in a datasource in email fields on forms using validation settings that have customizable error messages.

Hi Ben, thanks for your feedback. I’ve logged this feature request with our team so they can review it for future app updates. In the meantime, you can prevent duplicates by adding unique field rules to your backend database.

Thanks @Marine.Hovhannisyan . Are you talking about Airtable’s Email fields?

If you use Airtable, then the columns there have “Filter” and “Group” options. What I meant was that you could filter out duplicate emails or group them to see which emails were duplicated.

Thanks again @Marine.Hovhannisyan . The idea is to prevent duplicate emails from being submitted though. Sounds like a setting that Softr can add whenever we configer an email field on a form.

Sure, I have already let the team know this is a requested feature, and it would be great to have it added to our form blocks.

@artur , we have been waiting a long time for this improvement: [image] Prevent Duplicate Form Submissions Based on Name, Email, and Mobile – Client Registration they’ll be individual field validation. In other words, if you’ve enabled “Don’t allow duplicated value” for Email & Mobile inputs, the…

Exclude duplicate emails entered into forms using validation settings

Feature Requests

Ben September 29, 2026, 4:42pm 7

@artur, we have been waiting a long time for this improvement: