Prevent/disallow duplicate contact entry titles

In some cases you might not want to save duplicate contact entries based on the title.

For instance, you might have some sort of registration form based on the user's E-mail address or a unique code. In that case you can enable the option to save a custom entry title based on {tags}.

For example you could save the contact entry title to be the user's E-mail address by entering the {email} tag (your form should contain a field named "email").

When saving custom entry titles you can also enable the option Prevent submitting form when entry title already exists.

When the user submits the form and an entry with the same title already exists, it will display a custom defined error message to the user. By default it only compares against the current form entries. But you can also compare against all entries, or based on specific form ID's.