About this plugin
MTX Email DNS Validator for Contact Form 7 prevents users from submitting contact forms with non-existent or invalid email addresses by performing DNS/MX record validation before form submission.
Features
Validation
* DNS/MX Record Validation – Verifies email domains have valid MX records
* SMTP Mailbox Verification – Advanced validation that checks if the specific email address/mailbox exists
* Abstract API Integration – Comprehensive third-party email validation with quality scoring, risk assessment, and breach detection
* Catch-All Domain Detection – Optionally reject domains that accept any email address (available in DNS+SMTP mode)
* Disposable Email Detection – Block temporary/throwaway email addresses (via Abstract API)
* Role-Based Email Detection – Identify generic addresses like info@, admin@, support@ (via Abstract API)
* Three Validation Modes:
5s)
– DNS + SMTP (Thorough) – Validates both domain and specific mailbox (~2-5s)
– Abstract API (Advanced) – Comprehensive validation with quality scoring, risk assessment, and more
* Per-Form Configuration – Configure validation settings for each CF7 form individually
* Custom Error Messages – Set global or per-form error messages
Admin Interface
* Tabbed Interface – Organized Settings and Tools tabs for better UX
* Modern React Admin – Beautiful admin interface built with React 18 and Ant Design 5
* Welcome Pointer – Helpful onboarding tooltip for first-time users
* Import/Export Settings – Backup and migrate settings with JSON export/import
* Cache Management – Clear DNS cache on demand from Tools tab
* UI Preferences – Per-user interface settings (reset welcome pointer)
Performance & Data
* Validation Logging – Track all validation attempts with detailed logs and statistics
* Expandable Log Details – View comprehensive validation data including deliverability, quality scores, risk assessment, domain info, and breach history
* DNS Caching – Improves performance by caching DNS lookups (24-hour default)
* Data Cleanup Control – Choose whether to delete all plugin data on uninstall
* Multiple Click Protection – Prevents duplicate requests from rapid button clicks
Developer Features
* Extensible Hooks – Filters and actions for custom validation logic
* REST API – Full REST API for settings and logs management
* Translation Ready – Fully internationalized and localization-ready
* WordPress Coding Standards – Follows WordPress PHP and JavaScript standards
Benefits
- Reduce email bounce rates
- Protect your domain reputation
- Improve email deliverability
- Prevent spam and fake submissions
- Better data quality for marketing campaigns
Requirements
- WordPress 6.2 or higher
- PHP 8.1 or higher
- Contact Form 7 plugin