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Preventing duplicate e-mail addresses

  • Hey there,

    I’ve posted here before, but didn’t quite get a solid response.

    I have CF7DB working excellently, the only problem is I don’t want entries with the same e-mail address in my database.

    So if a user enters “john@gmail.com” and “john@gmail.com” is already in the table, I want the user to see an error message. (And of course the data will not be put in the database.)

    What’s the easiest way to implement this?

    Thanks

    http://wordpress.org/extend/plugins/contact-form-7-to-database-extension/

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