Title: FixBounce Email Verifier Author: fixbounce Published: 5. apr 2026 Last modified: 5. apr 2026 --- Search plugins ![](https://ps.w.org/fixbounce-email-verifier/assets/banner-772x250.png?rev=3499393) ![](https://ps.w.org/fixbounce-email-verifier/assets/icon.svg?rev=3499393) # FixBounce Email Verifier By [fixbounce](https://profiles.wordpress.org/fixbounce/) [Download](https://downloads.wordpress.org/plugin/fixbounce-email-verifier.1.0.0.zip) * [Details](https://et.wordpress.org/plugins/fixbounce-email-verifier/#description) * [Reviews](https://et.wordpress.org/plugins/fixbounce-email-verifier/#reviews) * [Installation](https://et.wordpress.org/plugins/fixbounce-email-verifier/#installation) * [Development](https://et.wordpress.org/plugins/fixbounce-email-verifier/#developers) [Support](https://wordpress.org/support/plugin/fixbounce-email-verifier/) ## Description **FixBounce Email Verifier** checks if every email address on your site actually exists — not just if it looks valid, but if the mailbox is real. Install, activate, and you’re protected immediately. No account needed. #### How It Works Every email submitted on your site (registration, comment, contact form, checkout) is verified through the FixBounce API: 1. **Syntax check** — Is the email properly formatted? 2. **Disposable domain check** — Is it a throwaway address? (350+ domains blocked) 3. **MX record check** — Does the domain have a mail server? 4. **SMTP mailbox verification** — Does the actual mailbox exist? 5. **Catch-all detection** — Does the domain accept any address? 6. **Deliverability score** — Deliverable, Risky, or Undeliverable All 6 checks run on every verification. The only difference between plans is how many verifications per day. #### Plans * **Trial (no signup)** — 5 verifications/day. All features. Install and go. * **Free account** — 10 verifications/day. Create a free account at [fixbounce.com](https://fixbounce.com) and add your API key. * **Pro ($29/mo)** — 500 verifications/day + bulk user verification. #### What Gets Protected * **Registration** — Blocks signups with fake or non-existent emails * **Comments** — Stops comments from disposable or invalid addresses * **Contact forms** — Real-time validation on Contact Form 7, WPForms, Gravity Forms, Elementor, Ninja Forms, and any HTML form * **WooCommerce** — Verifies billing email before order is placed #### When the daily limit is reached Verification pauses until the next day. Forms, registrations, and comments work normally — they just skip the email check. A notice appears in the admin dashboard with upgrade options. #### Privacy Only the email address is sent to the FixBounce API for verification. No other user data is transmitted. See our [privacy policy](https://fixbounce.com/privacy). ## Installation 1. Upload the `fixbounce-email-verifier` folder to `/wp-content/plugins/` 2. Activate the plugin through the ‘Plugins’ menu 3. Go to Settings FixBounce 4. Toggle the features you want — that’s it No API key is required. You get 5 free verifications per day immediately. To increase your limit, create a free account at [fixbounce.com](https://fixbounce.com), copy your API key from Dashboard API Keys, and paste it in Settings FixBounce. ## FAQ ### Do I need to create an account? No. The plugin works immediately with 5 verifications per day. No signup, no API key, no configuration beyond toggling features on. Create an account later to get 10/day (free) or 500/day (Pro). ### What happens when I hit the daily limit? Verification pauses — forms, registrations, and comments continue to work normally without email checking. A notice appears in your admin dashboard. The limit resets every 24 hours. ### What does each verification check? Every single verification runs all 6 checks: email syntax, disposable domain (350 + blocked), MX record, SMTP mailbox existence, catch-all detection, and deliverability scoring. There are no “basic” vs “premium” checks — you always get the full verification. ### Does it work with my form plugin? Yes. Real-time validation auto-detects any email input field. Works with Contact Form 7, WPForms, Gravity Forms, Elementor, Ninja Forms, Formidable, and any HTML form. ### Will it slow down my site? No. Verification runs via AJAX after the user finishes typing (800ms debounce). Zero impact on page load speed. ### Is it compatible with Akismet? Yes. FixBounce verifies email addresses, Akismet analyzes content. They complement each other. ### Does it work with WooCommerce? Yes. Toggle “WooCommerce checkout” in settings. Bad billing emails get blocked before the order is placed. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “FixBounce Email Verifier” is open source software. The following people have contributed to this plugin. Contributors * [ fixbounce ](https://profiles.wordpress.org/fixbounce/) [Translate “FixBounce Email Verifier” into your language.](https://translate.wordpress.org/projects/wp-plugins/fixbounce-email-verifier) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/fixbounce-email-verifier/), check out the [SVN repository](https://plugins.svn.wordpress.org/fixbounce-email-verifier/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/fixbounce-email-verifier/) by [RSS](https://plugins.trac.wordpress.org/log/fixbounce-email-verifier/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.0.0 * Initial release * Full SMTP email verification (5/day free, no signup) * Registration, comment, form, and WooCommerce protection * Real-time inline form validation * Daily usage meter with upgrade prompts * API key integration for higher limits ## Meta * Version **1.0.0** * Last updated **2 kuud ago** * Active installations **Fewer than 10** * WordPress version ** 5.0 or higher ** * Tested up to **6.9.4** * PHP version ** 7.4 or higher ** * Language * [English (US)](https://wordpress.org/plugins/fixbounce-email-verifier/) * Tags * [disposable email](https://et.wordpress.org/plugins/tags/disposable-email/)[email validation](https://et.wordpress.org/plugins/tags/email-validation/) [email verification](https://et.wordpress.org/plugins/tags/email-verification/) [spam protection](https://et.wordpress.org/plugins/tags/spam-protection/) * [Advanced View](https://et.wordpress.org/plugins/fixbounce-email-verifier/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/fixbounce-email-verifier/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/fixbounce-email-verifier/reviews/) ## Contributors * [ fixbounce ](https://profiles.wordpress.org/fixbounce/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/fixbounce-email-verifier/)