Byteplant Email Validator
With the Byteplant Email Validator plugin you can easily verify with a real-time live check if an email address really exists and is valid (https://ww …
The facts
- Rating
- 3.8★ from 9
- Active installs
- 100+
- Price
- Free
- Last updated
- 19 Aug 2026
- Added
- Jan 2016
- Requires WP
- 3.0.1
- Tested up to
- WP 7.1.0
- Downloads
- 11,939
Our analysis
AI-assistedByteplant Email Validator is a WordPress plugin that provides real-time email validation using the Byteplant Email-Validator API. It checks if an email address exists through various tests, including syntax verification, DNS validation, and disposable email detection.
The plugin integrates with several popular form plugins such as Contact Form 7, Gravity Forms, and WooCommerce, and can also work with any form that uses the is_email() function. It is suitable for users who want to ensure the validity of email addresses collected through their website forms.
Best for: This plugin suits website owners who need to validate email addresses collected through forms.
What it does well
- ✓Real-time email validation using the Byteplant Email-Validator API
- ✓Integrates with multiple popular form plugins
- ✓Checks for syntax, DNS, disposable emails, and more
- ✓No emails are sent to the recipient during validation
- ✓No blacklisting risk for your IPs and domains
Where it falls short
- •Requires an API key for use
- •Limited information on data protection policies
Verdict
Byteplant Email Validator offers a comprehensive solution for real-time email validation. It is a practical choice for those looking to improve data quality on their WordPress sites.
From the developer
byteplant's own description of Byteplant Email Validator, lightly tidied.
Real-Time Email Validation – Live Check
This plugin uses the Byteplant Email-Validator API (https://www.byteplant.com/email-validator/) for a real-time live check to find out if an email address really exists or not.
Supported Plugins / Compatible Forms
The plugin integrates seamlessly with:
- Contact Form 7
- Gravity Forms
- WPForms
- Ninja Forms
- Jetpack/Grunion
- WooCommerce
- WordPress registration forms
- WordPress comments
- and with any other form which uses the is_email() function (no changes required).
The plugin can also be easily integrated into any 3rd party forms.
Key Features
The Email-Validator API real-time validation process includes a live check with all of the following tests:
- Syntax verification (IETF/RFC standard conformance)
- DNS validation, including MX record lookup
- Disposable email address (DEA) detection
- Misspelled domain detection to prevent Typosquatting
- Freemail address detection
- SMTP connection and availability checking
- Temporary unavailability detection
- Mailbox existence checking
- Catch-All testing
- Greylisting detection
We do not send any email to the recipient address during the entire validation process. All processing is done on our servers, your IP addresses and domains are not affected in any way by the Email-Validator service – absolutely no blacklisting risk for your IPs and domains.
Data Protection and Privacy Policy
Please see the Frequently Asked Questions section.
Getting Started
The plugin requires an API Key. Please sign up for an account at
https://www.byteplant.com/email-validator/free-trial-registration.html (no credit card required).
The trial account comes with 1,000 free credits.