Title: Clearout Email Validator – Real-Time Email Verification on WordPress Forms Author: clearoutio Published: 24 oktober 2019 Last modified: 18 februari 2026 --- Plugins zoeken ![](https://ps.w.org/clearout-email-validator/assets/banner-772x250.png?rev=3177739) ![](https://ps.w.org/clearout-email-validator/assets/icon-256x256.png?rev=2179096) # Clearout Email Validator – Real-Time Email Verification on WordPress Forms Door [clearoutio](https://profiles.wordpress.org/clearoutio/) [Download](https://downloads.wordpress.org/plugin/clearout-email-validator.3.3.1.zip) * [Details](https://nl.wordpress.org/plugins/clearout-email-validator/#description) * [Beoordelingen](https://nl.wordpress.org/plugins/clearout-email-validator/#reviews) * [Installatie](https://nl.wordpress.org/plugins/clearout-email-validator/#installation) * [Ontwikkeling](https://nl.wordpress.org/plugins/clearout-email-validator/#developers) [Ondersteuning](https://wordpress.org/support/plugin/clearout-email-validator/) ## Beschrijving Clearout Email Validation plugin seamlessly integrates with all major forms to validate the email addresses in real time. The plugin performs 20+ refined real-time validation checks to determine the current status of the email address. These checks include extensive verifications like greylist verification, anti-spam check, gibberish check, catch-all verification, email blacklist verification, temporary email address check, and more. #### Key Benefits of Using Clearout Email Verification Plugin: * Accept only **safe-to-send** email address to **protect your sender reputation** * Accept only **business or work email addresses** * **Prevent fraudulent signups or leads getting into CRM** by stopping [temporary / disposable / throw away email addresses](https://clearout.io/blog/2020/09/30/dont-let-your-email-campaigns-be-a-victim-of-disposable-email-addresses) * **Customization to Block free email address providers** like gmail.com / yahoo. com / hotmail.com * **Remove** duplicate and **alias email addresses** #### How to Install Clearout Email Verifier Plugin **Obtain an API Token:** 1. **Log in** to your Clearout account. 2. Navigate to the [‘Developer’](https://app.clearout.io/developer/api/list) menu and click on **‘ + Create API Token’**. 3. Add the necessary details for reference, and click on “ Create” to generate the API token. **Create a Clearout Account (if you don’t have one):** 1. [Sign up](https://app.clearout.io/register) for a Clearout account to **get 100 free email validation credits with no credit card required**. For more detailed instructions, visit Clearout [Email Verifier Plugin Installation](https://clearout.io/integrations/wordpress/). #### Supported Forms/Plugins The Clearout email verification plugin supports a rich set of popular form-based plugins by listening to email address capture flow or by hooking into WordPress is_email() function: * Elementor Form * Gravity Forms * Forminator Form * WooCommerce Checkout Forms * WooCommerce Registration Form * Fluent Form * WP Forms * Formidable forms * WS Form * WP-Members * Contact Form * Mailster Form * MailChimp * Ninja Forms * Profile Builder * Ultimate Member registration form * Users Ultra registration form * JetPack reacties en een contactformulier * MailPoet * Theme My Login * Paid Memberships Pro * Form Maker van 10Web * Visual Form Builder * Alle WordPress registraties & contactformulieren #### Belangrijkste functies * Accurate Email Verification * Fastest Real-time Email Validation * Naadloze API integratie * Guaranteed Deliverability (Safe to send) * High Precision Advanced Catch-all Resolver * Block Role Email * Block Disposable Email * Gibberish e-mail blokkeren * Email / Domain Allowlisting and Blocklisting * Aangepast foutbericht * Limit email validation to only required pages * Low Credit Notification Alert * Team Accounts * Syntax Verification * [Test email addresses](https://docs.clearout.io/api-overview.html#testing) #### Know A Little More About Clearout Email Verification Service In addition to its availability as a WordPress Plugin, Clearout Email Verifier supports email verification in multiple forms and ways to meet the needs of the user. Other verification methods supported by Clearout Email Verifier are – Bulk email list validation, real-time email validation API, and Form Guard Email Validation. #### VERDER LEZEN More about Clearout Email Verification * [https://clearout.io/email-verification-api/](https://clearout.io/email-verification-api/) * [https://clearout.io/disposable-email-checker/](https://clearout.io/disposable-email-checker/) * [https://clearout.io/integrations/](https://clearout.io/integrations/) * [https://clearout.io/help/](https://clearout.io/help/) * [https://docs.clearout.io/](https://docs.clearout.io/) Other Clearout Services * [https://clearout.io/email-finder/](https://clearout.io/email-finder/) * [https://clearout.io/sales-prospecting/chrome-extension/](https://clearout.io/sales-prospecting/chrome-extension/) * [https://clearout.io/sales-prospecting/advanced-data-enrichment/](https://clearout.io/sales-prospecting/advanced-data-enrichment/) * [https://clearout.io/reverse-lookup/linkedin/](https://clearout.io/reverse-lookup/linkedin/) * [https://clearout.io/reverse-lookup/email/](https://clearout.io/reverse-lookup/email/) ## Schermafbeeldingen [⌊Clearout Email Validator setting page. Here you can add your Clearout API token and check/uncheck the role, disposable and Business email validator options.⌉⌊Clearout Email Validator setting page. Here you can add your Clearout API token and check/ uncheck the role, disposable and Business email validator options.⌉[ Clearout Email Validator setting page. Here you can add your Clearout API token and check/uncheck the role, disposable and Business email validator options. [⌊Voorbeeld - BWS formulier weigeren gratis dienst e-mail adres.⌉⌊Voorbeeld - BWS formulier weigeren gratis dienst e-mail adres.⌉[ Voorbeeld – BWS formulier weigeren gratis dienst e-mail adres. [⌊Example - BWS Form denying invalid email addresses with a custom error message.⌉⌊ Example - BWS Form denying invalid email addresses with a custom error message.⌉[ Example – BWS Form denying invalid email addresses with a custom error message. [⌊Example - BWS Form denying invalid email address.⌉⌊Example - BWS Form denying invalid email address.⌉[ Example – BWS Form denying invalid email address. [⌊Example - BWS Form denying invalid email addresses with a custom error message.⌉⌊ Example - BWS Form denying invalid email addresses with a custom error message.⌉[ Example – BWS Form denying invalid email addresses with a custom error message. [⌊Example - Clearout Account page to generate API token.⌉⌊Example - Clearout Account page to generate API token.⌉[ Example – Clearout Account page to generate API token. ## Installatie ### Installation using WordPress dashboard 1. Select **Plugins -> Add New**. 2. Search for **“Clearout Email Validator”**. 3. Click on **Install Now** to install the plugin. 4. Klik op de knop **Activeren** om de plugin te activeren. 5. Get your [Clearout API token](https://app.clearout.io/developer/api/list) before start using the plugin. 6. Configure the plugin settings, including your API key, and check/uncheck the role, disposable, and Business email validator. ### Handmatige installatie 1. Upload the plugin files to the `/wp-content/plugins/clearout-email-validator` directory. 2. Activate the plugin through the **Plugins** screen in WordPress 3. Get your Clearout API token through [here](https://app.clearout.io/developer/api/list). 4. Configure the plugin settings, including your API key, and switch on or off the valid, disposable, and free email validator. ## FAQ ### What is real-time email verification? Real-time email verification refers to the process of confirming the authenticity or existence of an email address account in real time. Its results are based on real-time analysis rather than on basic checks against the old & existing databases. ### How does this plugin work? This Email Validation plugin listens to email address capture flow for all major forms by hooking WordPress is_email() function to verify whether the user’s typed email address can be accepted or not. Behind the screen, the verification will be carried out using Clearout API and the results will be matched with the appropriate settings allowed by the plugin. ### Which Clearout status will be considered as a “valid” email address? Clearout status other than “invalid” will be considered as “valid” email address and the form submission will be allowed. Also, by default, the email address of “ disposable” or “role” will be considered as “invalid.” These settings can be changed in the plugin settings. ### Houdt e-mailvalidatie alle slechte e-mails tegen? No, Clearout email validation cannot prevent bad emails from entering your system in the following conditions: 1. If email validation takes longer than the specified timeout value 2. If the status of email validation is returned as unknown ### What version of WordPress is required? This requires a minimum WordPress version of 4.6, tested and compatible with the latest version. ### Why does “Select Forms” have only a few forms listed? We strive to bring Clearout email validation support to all major WordPress forms, in case if you see your form is not listed let us know (us@clearout.io). Alternatively, you can try using [Clearout Form Guard](https://docs.clearout.io/formguard/v3/index.html) to bring support of email validation to any form with little or no coding effort ### Wat is een API token en waar kan ik die krijgen? The API token is a unique representation of your access to Clearout Email Validation Service. The API token can be created or obtained by ‘+ Create API Token’ from the Developer menu. ### Hoe een API token genereren? Once logged in to your Clearout account click on ‘Developer’–> Click on ‘+ Create API Token’–> Provide the required details –> Click on Create and the API token will be generated. ### What is a credit? A credit represents the successful validation of a single email address. The trial account comes with 100 FREE credits. Additional credits can be purchased anytime and the credits will never expire. ### Voorzie je in een test e-mail adres? Yes. For testing, you can find [test email addresses](https://docs.clearout.io/api-overview.html#testing) to confirm that your integration works as intended without incurring credits. ### What happens once the 100 free credits are exhausted? You need to purchase additional credits. System will notify in advance when you are [running out of credits](https://app.clearout.io/settings/notifications) (by default when below 50 credits) ### What factors determine the high accuracy level claimed by Clearout email validation plugin? Clearout WordPress Plugin performs more than 20+ validation checks on each email address to provide 99% accuracy level. These rigorous validation checks have a wide scale ranging from role/free account check to disposable email verification, spam trap detection, email blacklist verification, gibberish check & a lot more. ### Hoe veilig zijn mijn gegevens? Clearout email verifier is GDPR compliant. Data is highly secure since we take security and confidentiality seriously. At default, your processed data is retained in our system for 30 days, and it can be erased immediately if requested. In addition, all financial information is encrypted and maintained in a military-grade secure system. ### Hoe lang duurt het om een e-mailadres te valideren? Clearout email verifier has been rewarded to have the fastest TAT(Turnaround Time). Some domains might take longer time than expected. But free domains like gmail.com are verified in less than a half-a-second (less than 100 milliseconds) ### How to buy more credits? Buy the desired number of email verifier credits in a few clicks by clicking on [Buy Credits](https://app.clearout.io/account/pricing) from your account. ### How to opt out of the Clearout Email checker on a specific form? Clearout Email checker is enabled by default on all forms on the website. If it is necessary to skip validation on a given form, it must be handled as mentioned below. * Ninja Forms 1. Ensure to enable [Developer mode](https://ninjaforms.com/docs/developer-mode/) for your ninja form builder 2. Open the form in the Form editor that does not require the Clearout Email Validation 3. Open the Email field setting and under the ADMINISTRATION option enter the key value prefixed with ‘clearout_skip_validation’ for the field key and save the changes * Formidable/WP Form 1. Open the form in the Form editor that does not require the Clearout Email Validation 2. Add a new hidden field and in Options Advanced settings, enter the default value prefixed with ‘clearout_skip_validation’ and save the changes. * Elementor Forms 1. Open the form in the Form editor that does not require the Clearout Email Validation 2. In the Fields’s Advanced settings, enter the ID value prefixed with ‘clearout_skip_validation’ and save the changes. * Forminator forms 1. Open the form in the Form editor that does not require the Clearout Email Validation 2. Add a new hidden field and enter the value as ‘clearout_skip_validation’ and save the changes. ### Do you support page or form-specific custom validation? Yes, add the page URL that hosts the form in the ‘Add Form Page URLs’ to limit validation to page-specific or to limit form-specific custom validation through [Clearout Form Guard](https://docs.clearout.io/formguard/v3/index.html), the integration is simple and can be done without need of developer help. Clearout Form Guard provides all the bells and whistles to customize the email validation as per your need. ### Looking for custom integration of this plugin? Send us an email at us@clearout.io or say “Hello” in the chat ### Where can I report bugs? Send us an email at us@clearout.io or say “Hello” in the chat ## Beoordelingen ![](https://secure.gravatar.com/avatar/5986ddc61f5616ea102120e2bb90f4c5cb8b00e0dd3c3c362d00390596d3a6db? s=60&d=retro&r=g) ### 󠀁[Amazing Tool – Highly Recommended](https://wordpress.org/support/topic/amazing-tool-highly-recommended/)󠁿 [lorinom](https://profiles.wordpress.org/lorinom/) 13 februari 2026 I’ve been using this tool now for several weeks and have found it to be immensely helpful for my business. Just as important, when I reached out to customer service they were responsive and extremely supportive of my needs. I could not recommend this software more highly. ![](https://secure.gravatar.com/avatar/2df87619a3530487a088f0caced8fd1d995c848f1216e16efdd8f95fb98f76a0? s=60&d=retro&r=g) ### 󠀁[Super plugin](https://wordpress.org/support/topic/super-plugin-1323/)󠁿 [alturavela](https://profiles.wordpress.org/alturavela/) 29 mei 2025 Works very well! Great ![](https://secure.gravatar.com/avatar/9cb00d8491cae73593eca24a6dab99614cd3134785107fae5e740048b47239cd? s=60&d=retro&r=g) ### 󠀁[Unmatched Tech Support That Goes Above and Beyond](https://wordpress.org/support/topic/unmatched-tech-support-that-goes-above-and-beyond/)󠁿 [nocturnal009](https://profiles.wordpress.org/nocturnal009/) 13 februari 2025 I recently had the pleasure of interacting with the tech support team for this WordPress plugin, and I couldn’t be more impressed. They were prompt, professional, and extremely knowledgeable. Every query I had was addressed with patience and clarity, making the whole experience stress-free. The team went above and beyond to ensure my issues were resolved swiftly, and their guidance made a significant difference in optimizing my website. I highly recommend this plugin not only for its email verification and security features but also for the stellar support that comes with it! ![](https://secure.gravatar.com/avatar/dad2cf4c92ecb7ef699c9c9767531b8422752ed55d6f9376730f3a1d175c37de? s=60&d=retro&r=g) ### 󠀁[Nice plugin and good team](https://wordpress.org/support/topic/nice-plugin-and-good-team/)󠁿 [Akehl](https://profiles.wordpress.org/akehl/) 29 oktober 2024 II have been using ClearOut for 5 years primarily to validate emails on my WordPress site through their plugin and for bulk email validation. Recently, I encountered a bug. A good way to assess a plugin’s reliability is by reviewing its support services, and ClearOut’s support has been effective. They accurately identified the bug and assigned me an engineer (rather than an assistant who provides basic troubleshooting steps). The issue was resolved promptly. ![](https://secure.gravatar.com/avatar/0e8dc2891499fb756f65cc8dbcbd57ba80d86cafc531ee6f00e9ff53ed796538? s=60&d=retro&r=g) ### 󠀁[Nice integration, but lacks a critical feature](https://wordpress.org/support/topic/nice-integration-but-lacks-a-critical-feature/)󠁿 [Shall](https://profiles.wordpress.org/taven1gmailcom/) 4 september 2024 I’ve been using Clearout on my Wordpress/Woocommerce site for over a year and it has mostly been transparent in validating emails. However, I recently had a situation where a repeat customer opened a support ticket with us and they could not place an order. Their email was being returned as “gibberish” by Clearout even though it had previously worked fine. I checked the log in Clearout and found this as well. While the plugin is working as expected, there should be a feature to skip email validation for users/emails that have a role within Wordpress. For example, my customers have a role of “Customer”. The only way I found to allow this customer to place an order was to add them to the white list in Clearout. Had the customer not reached out via a support ticket, I would have never known. Hopefully, this can be added as it would reduce the number of validations needed and prevent customer frustration. ![](https://secure.gravatar.com/avatar/3863f5e88d3a6d9d0b8974256321c5a38a19bd968f0ec356d1e10628d95811e2? s=60&d=retro&r=g) ### 󠀁[Great work](https://wordpress.org/support/topic/great-work-1130/)󠁿 [krisseeuw](https://profiles.wordpress.org/krisseeuw/) 17 juni 2024 Using the plug-in for several years now, on multiple websites. It works great and helps to avoid spammers and create better contacts. Our situation is as follows: We use a freemium model for some digital products and also provide free helpful sites. We only request to provide a name and e-mail to send the download link to. There was quite some abuse, until I started to use ClearOut Email Validator. [ Lees alle 13 beoordelingen ](https://wordpress.org/support/plugin/clearout-email-validator/reviews/) ## Bijdragers & ontwikkelaars “Clearout Email Validator – Real-Time Email Verification on WordPress Forms” is open source software. De volgende personen hebben bijgedragen aan deze plugin. Bijdragers * [ clearoutio ](https://profiles.wordpress.org/clearoutio/) “Clearout Email Validator – Real-Time Email Verification on WordPress Forms” is vertaald in 2 localen. Dank voor [de vertalers](https://translate.wordpress.org/projects/wp-plugins/clearout-email-validator/contributors) voor hun bijdragen. [Vertaal “Clearout Email Validator – Real-Time Email Verification on WordPress Forms” in je eigen taal.](https://translate.wordpress.org/projects/wp-plugins/clearout-email-validator) ### Interesse in ontwikkeling? [Bekijk de code](https://plugins.trac.wordpress.org/browser/clearout-email-validator/), haal de [SVN repository](https://plugins.svn.wordpress.org/clearout-email-validator/) op, of abonneer je op het [ontwikkellog](https://plugins.trac.wordpress.org/log/clearout-email-validator/) via [RSS](https://plugins.trac.wordpress.org/log/clearout-email-validator/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.0.0 * Initiële release #### 1.0.1 * Content and Banner Changed #### 1.0.2 * Beschrijving gewijzigd #### 1.1.0 * Major Bug Fixes and performance increased #### 1.1.1 * Major Bug Fixes and Performance Improvement #### 1.1.2 * Kleine fouten opgelost #### 1.1.3 * Kleine fouten opgelost #### 1.1.4 * Prestatieverbeteringen. #### 1.1.5 * Prestatieverbeteringen. #### 1.1.6 * WPForm incompatible Fixes #### 1.1.7 * Kleine fouten opgelost #### 1.1.8 * Fouten opgelost #### 1.2.0 * Prestatieverbeteringen & fouten opgelost #### 1.3.0 * UI and Particular forms select changes #### 1.3.1 * Added Support for Mailster Form and WooCommerce Checkout form #### 1.3.2 * Kleine veranderingen #### 1.3.3 * Prestatieverbeteringen #### 1.3.4 * Kleine veranderingen #### 1.4.0 * Support PM Pro form #### 1.5.0 * Ondersteuning Elementor formulier #### 1.5.1 * Kleine veranderingen #### 1.5.2 * Kleine veranderingen #### 1.5.3 * Kleine veranderingen #### 1.6.0 * Added Support for Fluent Form #### 1.6.1 * Kleine veranderingen #### 1.6.2 * Kleine veranderingen #### 1.6.3 * Kleine veranderingen #### 1.6.4 * Supported WordPress version 5.7.2 #### 1.6.5 * Waarschuwing oplossing * Ondersteuning voor gibberish toegevoegd #### 1.6.6 * Kleine veranderingen #### 1.7.0 * Added support for WS Forms #### 1.7.1 * Kleine veranderingen #### 1.7.2 * Kleine verbeteringen #### 1.7.3 * Kleine fouten opgelost #### 1.7.4 * Kleine verbeteringen #### 1.7.5 * Custom Invalid Error Message #### 1.7.6 * Kleine veranderingen #### 1.7.7 * Kleine verbeteringen #### 1.7.8 * Kleine optimalisaties #### 1.7.9 * Kleine verbeteringen #### 1.7.10 * Minor Improvements #### 1.7.11 * Support of form specific validation #### 1.7.12 * Kleine verbeteringen #### 2.0.0 * Major Fixes and Woocommerce form improvements #### 2.0.1 * Kleine verbeteringen #### 2.0.2 * Minor Fixes and updated Readme #### 2.0.3 * Minor Fixes and error handling #### 2.0.4 * Minor Fixes and added strict mode #### 2.1.0 * Added Support for Forminator Forms and Filter Urls #### 2.1.1 * Optimised and improved Filter Urls #### 3.0.0 * Security Fixes and Code Optimisations #### 3.0.1 * Kleine verbeteringen #### 3.0.2 * Kleine verbeteringen #### 3.0.3 * Gravity Form Fixes #### 3.0.4 * By default, is_email option is disabled #### 3.1.0 * Exclusion URL Support #### 3.1.1 * Kleine verbeteringen #### 3.1.2 * Compatibility Fixes #### 3.1.3 * Inclusion & Exclusion url improvements #### 3.1.4 * Kleine veranderingen #### 3.1.5 * Minor Optimizations * Added safe to send option #### 3.1.6 * Kleine verbeteringen #### 3.1.7 * Improved WooCommerce hooks #### 3.2.0 * Introduced WooCommerce Signup Form support #### 3.2.1 * Minor Security Fixes #### 3.2.2 * Kleine veranderingen #### 3.2.3 * Kleine verbeteringen #### 3.2.4 * Kleine verbeteringen #### 3.2.5 * Minor Improvements #### 3.3.0 * Introduced blocking unknown email support #### 3.3.1 * Minor Fix ## Meta * Versie **3.3.1** * Laatst geüpdatet **4 maanden geleden** * Actieve installaties **600+** * WordPress versie ** 4.6 of nieuwer ** * Getest t/m **6.9.4** * Talen * [Dutch](https://nl.wordpress.org/plugins/clearout-email-validator/), [English (US)](https://wordpress.org/plugins/clearout-email-validator/) en [Ukrainian](https://uk.wordpress.org/plugins/clearout-email-validator/). * [Vertaal in je eigen taal](https://translate.wordpress.org/projects/wp-plugins/clearout-email-validator) * Tags * [email checker](https://nl.wordpress.org/plugins/tags/email-checker/)[email validation](https://nl.wordpress.org/plugins/tags/email-validation/) [email verification](https://nl.wordpress.org/plugins/tags/email-verification/) [email verifier](https://nl.wordpress.org/plugins/tags/email-verifier/)[woocommerce](https://nl.wordpress.org/plugins/tags/woocommerce/) * [Geavanceerde weergave](https://nl.wordpress.org/plugins/clearout-email-validator/advanced/) ## Waarderingen 4.2 van 5 sterren. * [ 9 5 sterren beoordelingen ](https://wordpress.org/support/plugin/clearout-email-validator/reviews/?filter=5) * [ 1 4 ster beoordeling ](https://wordpress.org/support/plugin/clearout-email-validator/reviews/?filter=4) * [ 1 3 ster beoordeling ](https://wordpress.org/support/plugin/clearout-email-validator/reviews/?filter=3) * [ 0 2 sterren beoordelingen ](https://wordpress.org/support/plugin/clearout-email-validator/reviews/?filter=2) * [ 2 1 sterren beoordelingen ](https://wordpress.org/support/plugin/clearout-email-validator/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/clearout-email-validator/reviews/#new-post) [Bekijk alle beoordelingen](https://wordpress.org/support/plugin/clearout-email-validator/reviews/) ## Bijdragers * [ clearoutio ](https://profiles.wordpress.org/clearoutio/) ## Ondersteuning Iets te melden? Hulp nodig? [Het supportforum bekijken](https://wordpress.org/support/plugin/clearout-email-validator/) ## Doneren Wil je de groei van deze plugin ondersteunen? [ Doneer aan deze plugin ](https://Clearout.io)