throwaway.cloud E-Mail Check

Detect and block disposable or temporary email addresses in comments, registrations, and contact forms — with full GDPR/CCPA-compliant logging and developer hooks.

✨ Features

• 🔍 Validates email addresses against the throwaway.cloud API

• 🛡️ Blocks temporary/disposable emails in:

  • Comment forms
  • User registrations
  • Popular contact form plugins

• 🔧 Developer-friendly filter to run checks from other plugins

• 📜 GDPR/CCPA-compliant logging with:

  • Subject access export (CSV)
  • Right to be forgotten deletion

• 🧾 Configurable logging levels: None, Domain only, or Full email

• ✅ Allowlist support for trusted emails/domains

• 🔎 Log viewer with filter/search and export options

• 🧪 PHPUnit test suite + Codecov coverage support

🛠 Installation

1. Upload the ZIP via Plugins → Add New → Upload Plugin
2. Activate the plugin
3. Go to Settings → throwaway.cloud E-Mail Check Settings to configure

⚙️ Configuration Options

Logging Level

Choose what to store in the log:

• None – No logging
• Domain Only – example.com from user@example.com
• Full Email – Full address stored (be cautious under GDPR)

Allow List

Bypass throwaway checks for specific addresses/domains:

admin@example.com
example.org

🔍 Admin Tools

Accessible under Settings → throwaway.cloud E-Mail Check Settings:

• 📊 Log Viewer with filters
• 📤 Export CSV by filter or by subject
• 🗑️ Delete logs by email/domain (Right to be Forgotten)

🧩 Developer Integration

throwaway_lookup_check (filter)

Run a throwaway check manually from your plugin:

$is_disposable = apply_filters('throwaway_lookup_check', false, 'user@example.com');

🔍 The source plugin name is automatically inferred from the call stack and logged.

throwaway_lookup_result (filter)

Override or modify the result of a throwaway check:

add_filter('throwaway_lookup_result', function($is_disposable, $email, $context) {
    if ($email === 'bypass@example.com') return false;
    return $is_disposable;
}, 10, 3);

throwaway_lookup_export_subject (filter)

Retrieve logs for a subject programmatically:

$logs = apply_filters('throwaway_lookup_export_subject', 'user@example.com');

throwaway_lookup_delete_subject (action)

Delete logs for a subject:

do_action('throwaway_lookup_delete_subject', 'user@example.com');

🧪 Testing

Set up a WordPress test environment:

bash bin/install-wp-tests.sh wordpress_test root root 127.0.0.1 latest

Run tests with coverage:

phpunit --coverage-clover=coverage.xml --coverage-html=coverage-report

🪪 License

MIT License — see LICENSE for full terms.

Made with 💙 by Iocium