Validation

Add to WooCommerce a NIF/CIF/NIE field for all billing and shipping forms, with validation and VIES/EORI suppo...

New standard of advance validation for Contact Form 7.

WooCommerce PDF invoices made simple. EU VAT validation, reverse charge invoice, proforma invoices, MOSS / OSS...

Change WordPress usernames from the user edit screen, with validation for existing users, illegal logins, and...

Manage EU/ UK VAT in WooCommerce, validate VAT numbers real time with VIES, exempt or preserve VAT with variou...

MW WP Form is shortcode base contact form plugin. This plugin have many features. For example you can use many...

ZeroBounce validates emails on your WordPress site in real-time, blocking invalid and risky emails to improve...

Enable email authentication/validation for the default WordPress PHPMailer.

Tax exemption and reverse charge VAT. VIES Validation of VAT numbers. Manage EU VAT numbers and company inform...

Adds a country flag and phone validation to the WooCommerce checkout phone field. Supports Classic and Block C...

The HTML Validation Plugin runs in the background, identifies and reports HTML validation errors on your websi...

With the Byteplant Phone Validator plugin you can easily verify if a phone number is really valid and callable...