BSK Forms Blacklist

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The plugin help you avoid spam submissions from GravityForms, Formidable Forms, WPForms and Contact Form 7. You may set it to use blacklist, whitelist, ip address, email or invitation code to validate visitor’s input and only allow valid entry submitted. It support validate multiple fields. It is easy to use. You may create your blacklist, whitelist, email or invitation code database first, then apply them to one or multiple fields of your form. Supports block email domain name and let you choose to Allow or Block submitting rather than allow always. Supports block IP address by country or only allow IP addresses in a country. ***Notice: here is the free version, the features described on https://www.bannersky.com/gravity-forms-blacklist-and-custom-validation/ is for Pro version.