Truelist Email Validator
Validate email addresses in real-time on WordPress forms using the Truelist API. Block invalid, disposable, and role-based emails.
Use with caution
Truelist Email Validator works, but test it on a staging site before relying on it in 2026. Was last updated 6 months ago, and scores 42/100 on our health check.
- Small user base (<10 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 Truelist Email Validator stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| contact form | >100 |
| disposable email | #76 |
| email validation | >100 |
| email verification | >100 |
| spam protection | >100 |
About Truelist Email Validator
From the official readme · v1.0.0Description
Truelist Email Validator connects your WordPress site to the Truelist email validation API. It checks every email address submitted through your forms before it enters your database — blocking invalid, disposable, and fake addresses at the point of entry.
Why validate emails?
- Reduce bounce rates on your mailing lists
- Keep your CRM and contact database clean
- Stop disposable email signups (Mailinator, Guerrilla Mail, etc.)
- Prevent fake registrations and comment spam
What gets validated
- Invalid emails — addresses that don’t exist or have bad syntax
- Disposable emails — temporary addresses from throwaway services
- Role addresses — generic addresses like info@, admin@, support@
- Failed MX check — domains with no valid mail server
- Non-existent mailboxes — addresses where the mailbox doesn’t exist
- Failed SMTP check — addresses rejected by the mail server
- Bad syntax — addresses that don’t follow email formatting rules
Supported form plugins
- Contact Form 7
- Gravity Forms
- WPForms
- WordPress User Registration
- WordPress Comments
- Universal mode — catches email fields from any other form plugin automatically
Features
- Real-time inline validation as visitors type (optional)
- 24-hour result caching — no redundant API calls
- Fully configurable blocking rules — enable only what you need
- Custom error messages
- API key test button in settings
- Fails open on API errors — your forms never break due to an outage
Requirements
A free or paid Truelist account is required. Sign up at truelist.io to get your API key.
External Services
This plugin connects to the Truelist email validation API to check whether email addresses are deliverable. This service is required for the plugin to function.
What data is sent: The email address submitted through your form is sent to the Truelist API for validation.
When it is sent: An API request is made each time a user submits a form with an email field. Results are cached for 24 hours — repeat submissions with the same address do not trigger a new API call.
Service provider: Truelist (https://truelist.io)
- Terms of Service: https://truelist.io/terms
- Privacy Policy: https://truelist.io/privacy
Installation
- Upload the
truelist-email-validatorfolder to/wp-content/plugins/
— or install directly via Plugins → Add New → Search for “Truelist” - Activate the plugin via Plugins → Installed Plugins
- Go to Settings → Truelist
- Paste your API key from truelist.io and click Test API Key
- Enable the blocking rules and form integrations you want
- Click Save Changes
Frequently asked questions
Do I need a Truelist account?
Yes. The plugin uses the Truelist API to validate emails. You can create a free account at truelist.io.
Will this break my forms if the Truelist API is down?
No. The plugin is designed to fail open — if the API is unreachable or returns an error, the email is allowed through. Your forms will never stop working due to an API outage.
Does it slow down my forms?
Validation results are cached for 24 hours per email address. After the first check, repeat submissions with the same email skip the API call entirely. The API itself typically responds in under 500ms.
Which form plugins are supported?
Contact Form 7, Gravity Forms, and WPForms have dedicated integrations. For all other plugins, enable Universal mode in settings — it automatically detects and validates email fields in any form submission.
Can I customise the error message?
Yes. Go to Settings → Truelist and edit the Error message field.
Can I block only disposable emails but allow invalid ones through?
Yes. Each rule is independently toggleable in the settings page.
Changelog
Initial release.
1.0.0
- Initial release
- Support for Contact Form 7, Gravity Forms, WPForms
- Universal mode for all other form plugins
- Real-time on-blur validation
- 24-hour transient caching
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best Truelist Email Validator alternatives
All contact form plugins →
FAQ
Truelist Email Validator: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 5, 2026
Is Truelist Email Validator free?
Yes. Truelist Email Validator is free to download and use from the official WordPress.org plugin directory.
Is Truelist Email Validator safe to use in 2026?
Truelist Email Validator works, but test it on a staging site before relying on it in 2026. Was last updated 6 months ago, and scores 42/100 on our health check.
How many websites use Truelist Email Validator?
Truelist Email Validator is active on <10 WordPress websites and has been downloaded 274 times since it launched in April 2026. It was downloaded 47 times in the last 30 days.
Does Truelist Email Validator work with WordPress 7.1?
Truelist Email Validator 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 Truelist Email Validator need?
Truelist Email Validator requires PHP 8.0 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Truelist Email Validator last updated?
The latest version, 1.0.0, was released on April 10, 2026 (6 months ago).
Who makes Truelist Email Validator?
Truelist Email Validator is developed and maintained by ayushtruelist.
What are the best alternatives to Truelist Email Validator?
The most popular alternatives to Truelist Email Validator are Contact Form 7 (10M+ installs), Akismet Anti-spam: Spam Pro… (5M+ installs) and WPForms (5M+ installs).
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