Gravity Forms Kickbox Email Validation

MVP WordPress plugin that adds a Validate with Kickbox checkbox to Gravity Forms Email fields.

Email validation for Gravity Forms using the Kickbox API.

What it does

• Adds a WordPress settings page at Settings → GF Kickbox
• Stores your Kickbox API key in WordPress options
• Adds a checkbox to Gravity Forms Email fields: Validate with Kickbox
• During form submission, validates enabled email fields against Kickbox
• Blocks only emails Kickbox returns as undeliverable
• Allows deliverable, risky, unknown, and API timeout/error responses for now

Install

1. Upload this folder to wp-content/plugins/gf-kickbox-email-validation
2. Activate Gravity Forms Kickbox Email Validation
3. Go to Settings → GF Kickbox
4. Add your Kickbox API key
5. Edit a Gravity Form
6. Open an Email field
7. Enable Validate with Kickbox
8. Test with a known bad email address

MVP behavior

This first version is intentionally conservative so you do not accidentally lose real leads.

It blocks only:

result = undeliverable

Everything else passes.

Notes

This improves lead hygiene at form intake. It does not prevent phishing attempts that happen later in an email conversation.