Checkout Field Editor (Checkout Manager) for WooCommerce – The best WooCommerce checkout manager plugin to man...
Free
400k+ installs 4.9★ (1,056)
UserCheck
Block disposable and throwaway email addresses on your WordPress site.
The facts
- Rating
- 5★ from 1
- Active installs
- 100+
- Price
- Free
- Last updated
- 26 Aug 2026
- Added
- Aug 2024
- Requires WP
- 6.0
- Tested up to
- WP 7.1
- Requires PHP
- 7.4
- Downloads
- 2,669
Our analysis
AI-assistedUserCheck is a WordPress plugin designed to block disposable and throwaway email addresses from sign-up forms. It aims to reduce spam and fake accounts, resulting in a cleaner user base. The plugin integrates automatically with several popular plugins and offers a fallback option for unsupported ones.
You can configure which types of email addresses to block, including those from public providers and known spammers. UserCheck operates lightweight, checking emails only upon form submission, and maintains functionality even if the service experiences downtime.
Best for: This plugin is suitable for websites that require user registration and want to minimise spam accounts.
What it does well
- ✓Blocks disposable and throwaway email addresses
- ✓Integrates automatically with many popular plugins
- ✓Allows custom blocking options for different email types
- ✓Lightweight design checks emails only on form submission
- ✓Maintains functionality during service downtime
Where it falls short
- •Limited information on additional features or configurations
Verdict
UserCheck provides a straightforward solution for blocking unwanted email addresses during user registration. It is particularly useful for sites looking to maintain a quality user base.
From the developer
UserCheck's own description of UserCheck, lightly tidied.
UserCheck blocks disposable and throwaway email addresses from your sign-up forms. The result: less spam, fewer fake accounts, and a cleaner user base.
Supported plugins
If you’re using any of these, UserCheck protects them automatically — nothing to configure:
- WordPress core (registration, comments, multisite signup, profile email change)
- WooCommerce (classic checkout, Cart/Checkout Block, account registration, Edit-account email change)
- Profile Builder (free + Pro)
- Contact Form 7
- WPForms
- Elementor Pro Forms
- Gravity Forms
- Fluent Forms
- Ninja Forms
- Formidable Forms
- MailPoet
Fallback for unsupported plugins
For plugins without a built-in integration, you can explicitly enable a fallback check under Settings → UserCheck → Coverage. It runs only on POST submissions, skips existing users and login attempts, and stays out of dashboard reads and background tasks.
Choose what to block
Pick which kinds of email addresses get blocked: domains that can’t receive email, disposable addresses, public providers (Gmail, Yahoo, etc.), forwarding services that hide the real address, and known spammers. Domains on your UserCheck account blocklist are always blocked.
Lightweight by design
Emails are checked only when users submit a form (registration, comment, checkout) — never re-checked for existing users or orders. No background scans, no surprises.
Resilient by design
If our service is ever down or slow, your site keeps working: sign-ups go through and the error is logged for review. Each request times out after 2 seconds, so an unresponsive API can’t hold up your forms.
Full email or domain only
Send the full email (more accurate) or just the domain.
Extensible
Developers can plug UserCheck into any plugin’s validation hook by calling UserCheck::instance()->evaluate_email( $email ) and acting on the returned action, reason, and message.
Tagged as
purpose
Checkout & Cart Optimisation
topic
Anti-Spam
Email Validation
Disposable Email
Email
Address
Emails
Forms
Form
Domain
Registration
Account
platform
Elementor
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