ZeroBounce Email Verification & Validation
ZeroBounce validates emails on your WordPress site in real-time, blocking invalid and risky emails to improve deliverability and reduce bounce rates.
Use with caution
ZeroBounce Email Verification &… works, but test it on a staging site before relying on it in 2026. It runs on 900+ sites, is rated 4.8/5 and was last updated 1 month ago, and scores 60/100 on our health check.
- Small user base (900+ active installs)
- Very few reviews so far
- Only tested up to WordPress 6.9 (latest is 7.1)
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where ZeroBounce Email Verificati… stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| email checker | #19 |
| email tester | #5 |
| email validation | #12 |
| email verification | #7 |
| email verifier | #4 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 4.8 from 4 reviews
About ZeroBounce Email Verification & Validat…
From the official readme · v1.1.6Description
Need an email validation tool to block invalid and high-risk emails on your WordPress website?
The ZeroBounce email verification plugin assists users by validating email addresses entered into your registration forms, comments sections, eCommerce shops, and more. Install the plugin, connect your API key, and select the forms you want to monitor with email validation.
Key Features
- Automated real-time email validation – Automatically prevent selected email types from creating accounts, leaving comments, or signing up
- Detect more than 30+ email address types – Including invalid, abuse, disposable, spam trap, toxic domains, catch-all, and more
- Choose what to accept – Create your own rules for email validation and disallow emails based on status
- Email verification for 9 form types – Easily select which forms you want to protect with email validation
- Fast manual email validation – Verify any email address in the tools section using our interactive form
- Email validation API logs – Keep track of monthly email verifications, including status, sub-status, IP, date, and credits used
Benefits
- Keep your email list clean & accurate
- Reduce your email bounce rate
- Boost your inbox placement
- Protect your email sender reputation
- Improve email deliverability
- Eliminate fraudulent, untrustworthy shoppers
- Block spammers and spoofers
- Keep your comments section clean
Supported Forms/Plugins
- Contact Form 7
- WPForms
- Ninja Forms
- Formidable Forms
- WooCommerce
- WordPress Post Comments
- WordPress Registration
- MC4WP: Mailchimp for WordPress
- Gravity Forms
- Fluent Forms
- WS Forms
- Mailster Forms
- Forminator Forms
And more support is being added gradually.
Installation
- Upload the plugin files to the
/wp-content/plugins/directory, or install the plugin through the WordPress plugins screen directly. - Activate the plugin through the ‘Plugins’ screen in WordPress
- Go to the plugin Settings screen and set your API Key. You can find your api key here.
- Select which forms you would like to validate, click the relevant checkboxes.
That’s it! You are now automatically validating emails and reducing abuse, spam and more.
Frequently asked questions
What is email verification?
Email verification is the process of determining if an email address is valid and in use. Using an email verifier, you can identify and block invalid and high-risk email types such as disposable emails, spam traps, and abuse emails.
Why do I need to verify emails?
Email verification is necessary for businesses to ensure your email list contains valid data. Whenever someone signs up on your forms with an invalid or high-risk email address, it leads to future issues, including higher email bounce rates, more spam placement, and a potential email blacklisting. Using the ZeroBounce plugin, you can block low-quality email addresses and protect your email deliverability.
How does the ZeroBounce email verification plugin work?
Our email validation plugin integrates with popular forms, including WordPress registration, post comments, WooCommerce, and more. The plugin “hooks” into the form and verifies incoming email address submissions in real time. Once our email verifier confirms the status using our API, it will allow or block the email address based on your preferences.
Is the email verification plugin free?
There is no charge to install and use the ZeroBounce email verification plugin. However, you will require credits to validate incoming email addresses on your forms. The rate is 1 ZeroBounce credit to verify 1 email address. You can test the email verification plugin and clean emails regularly by creating a free account. All users get instant access to 100 free monthly email verifications at no cost. Visit https://www.zerobounce.net/members/signin/register to get started.
What happens if I run out of email verification credits?
Your forms and the plugin will continue to function normally. However, you cannot verify incoming emails until you acquire more credits. The email verifier plugin provides monthly credit usage charts and will notify you when your email validation credits run low.
Changelog
1.1.6
- Fixed: Admin credits, dashboard chart, and logs table now load when another plugin or theme prints an HTML comment before admin-ajax JSON
- Fixed: Loading spinners are dismissed if an admin-ajax request fails instead of remaining visible
1.1.5
- Added: Email validation now runs on the WooCommerce My Account registration form (via the
woocommerce_register_posthook), in addition to the existing checkout validation. Controlled by the existing WooCommerce form toggle. - Improved: When the same address is submitted through both checkout and registration in a single request (checkout with “create an account”), it is validated only once to avoid a duplicate API call and credit.
1.1.4
- Fixed: Logs page no longer exhausts PHP memory on sites with large log histories (switched to server-side DataTables pagination)
- Fixed: “View” button on the Logs page now works on the first row and on responsive (mobile) layouts
- Improved: Log details modal opens immediately with a loading spinner instead of blocking until the request completes
- Security: Logs and single-log AJAX endpoints now require the
manage_optionscapability; SQL queries hardened with prepared statements - Performance: Added indexes on the validation logs table (
date_time,email,status) - Updated tested version to 6.9.4
1.1.3
- Updated tested version to 6.7.1
1.1.2
- Fixed minor bugs for validation
1.1.0
- Added support for bulk validation
- Removed credits graph
Screenshots
For developers
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Best ZeroBounce Email Verification… alternatives
All email checker plugins →
FAQ
ZeroBounce Email Verification & Val…: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 5, 2026
Is ZeroBounce Email Verification &… free?
Yes. ZeroBounce Email Verification &… is free to download and use from the official WordPress.org plugin directory.
Is ZeroBounce Email Verification &… safe to use in 2026?
ZeroBounce Email Verification &… works, but test it on a staging site before relying on it in 2026. It runs on 900+ sites, is rated 4.8/5 and was last updated 1 month ago, and scores 60/100 on our health check.
How many websites use ZeroBounce Email Verification &…?
ZeroBounce Email Verification &… is active on 900+ WordPress websites and has been downloaded 14,412 times since it launched in September 2017. It was downloaded 376 times in the last 30 days.
Does ZeroBounce Email Verification &… work with WordPress 7.1?
ZeroBounce Email Verification &… is officially tested up to WordPress 6.9.9, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
What PHP version does ZeroBounce Email Verification &… need?
ZeroBounce Email Verification &… requires PHP 7.0 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was ZeroBounce Email Verification &… last updated?
The latest version, 1.1.6, was released on August 26, 2026 (1 month ago).
Who makes ZeroBounce Email Verification &…?
ZeroBounce Email Verification &… is developed and maintained by zerobounce.
What are the best alternatives to ZeroBounce Email Verification &…?
The most popular alternatives to ZeroBounce Email Verification &… are Antideo Email Validator (800+ installs), Clearout Email Validator (500+ installs) and DeBounce Email Validator (300+ installs).
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