Description

Spam Defender - Email Blocker helps you reduce spam and fake activity by blocking specific email addresses or domains.
Once blocked, users with those emails will not be able to:

• Register new accounts
• Login
• Post comments
• Checkout or create accounts in WooCommerce

This plugin is lightweight, easy to use, and comes with an admin settings page where you can manage blocked emails/domains.

Plugin Information

• Contributors: shagor447
• Tags: email, block, registration, comments, woocommerce
• Requires at least: WordPress 6.0
• Tested up to: WordPress 6.9
• Requires PHP: 7.4
• Stable tag: 1.0.1
• License: GPLv2 or later

Key Features

• Block emails globally across WordPress
• Block on login, registration, comments, and WooCommerce checkout
• Manage blocked emails from the settings page
• Search blocked email lists
• Prevents fake orders and spam signups

Technologies Used

• Platform: WordPress
• Framework: WooCommerce API
• Language: PHP, JavaScript, CSS3
• Security: Google reCAPTCHA v2 / v3 Integration
• Tools: WordPress Settings API for admin configuration

Installation

• Download the plugin zip file and extract it.
• Upload the spam-defender-email-blocker folder to /wp-content/plugins/ directory.
• Alternatively, download the github repository as a ZIP file, then go to Dashboard > Plugins > Add Plugin > Upload Plugin > install Now > and Activate Plugin.
• You can also install it form the plugin store by searching name of the plugin.
• Activate the plugin via the Plugins menu in WordPress.
• Navigate to Dashboard > Settings > Block Email and configure your blocked emails/domains.

Design & Performance Highlights

• Minimal interface that integrates naturally into WooCommerce review sections.
• Fast-loading and optimized for seamless user experience.
• Secure and reliable protection against fake review submissions.

Frequently Asked Questions

Will this block existing users with blocked emails?
- No. It prevents future registrations, logins, comments, and checkouts using blocked emails.

Does it work with WooCommerce?
- Yes, WooCommerce checkout and account creation are fully supported.

Is my data secure?
- Yes, all email data is securely handled.

Will it affect site performance?
- No, the plugin is lightweight and optimized for speed.

Screenshot

Admin settings page to manage blocked emails.

Blocked email options.

Unblocked email options.

Search functionality.

Changelog
1.0.1

• Tested with the latest WordPress release.
• Fixed minor bugs.

1.0.0

• Initial release.
• Block email addresses from registration, login, comments, and WooCommerce checkout.
• Added Settings link on the plugin page
• Improved settings form design (inline input + button)
• Added serial numbers in blocked email list
• Added search box with form submit
• Added pagination (20 per page)
• Added nonce verification for admin actions (block / unblock email)
• Used wp_unslash() before sanitizing input from $_POST and $_GET
• Escaped output properly using esc_html(), wp_kses_post(), and esc_html__()
• Sanitized checkout email field (billing_email) with wp_unslash() + sanitize_email()
• Added // phpcs:ignore to prevent false-positive warnings for nonce checks (WooCommerce handles its own security)

Update Notice

1.0.1 = Version 1.0.1 has been released as a stable version.

License & Copyright

• Copyright © Raisul Islam Shagor
• Email: [email protected]
• Website: https://raisul.dev/
• Conatct: https://raisul.dev/contact

This plugin is free to use, modify, and distribute under the license terms.