Dilli Email Validator
Validates email addresses in real-time and blocks form submissions with invalid or fake emails. Reduce spam, fix typos, and capture quality leads.
Use with caution
Dilli Email Validator works, but test it on a staging site before relying on it in 2026. It runs on 100+ sites, is rated 4.7/5 and was last updated 10 months ago, and scores 51/100 on our health check.
- Small user base (100+ active installs)
- Only tested up to WordPress 6.9 (latest is 7.1)
How does it stack up?
Side-by-side on installs, updates, ratings & supportDaily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Dilli Email Validator stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| email address validation | #43 |
| email checker | #24 |
| email validation | #48 |
| email validator | #8 |
| email verification | #51 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 4.7 from 15 reviews
About Dilli Email Validator
From the official readme · v1.7.1.0Description
This plugin integrates with the Dilli Email Validation API (DEVA) to block fake or incorrectly formatted email addresses at form submission, ensuring higher-quality leads and significantly reducing spam.
This plugin requires an API Key which can be obtained for FREE by signing up here. Learn more about Dilli Email Validation API here.
This plugin hooks directly into the WordPress core email validation function (is_email()), which is used by most major form plugins. That means it works out of the box with popular form builders like:
- Contact Form 7
- WPForms
- Gravity Forms
- Ninja Forms
- Jetpack/Grunion contact forms
- WordPress registration forms
- and many others.
No need to modify your forms — just install and activate the plugin.
Features
- Validates email address format. Ex: email address
fooAtdillilabs.comis invalid because of missing ‘@’ - Checks for existence of MX records of the email address domain. Ex:
foobar@dlfkdlfkf.cois invalid because no MX records exist for domain dlfkdlfkf.co. - Checks for Disposable/Temporary email addresses. Ex: user@mailinator.com is invalid because mailinator.com provides temporary shared temporary email inboxes.
- Checks for conformity with ESP (Email Service Provider) grammar rules. Ex:
bob@yahoo.comis invalid because Yahoo does not allow user part (bobin this case) to be less than 4 characters. - Checks for profanity in user part of email address. Ex:
f***you@gmail.comis invalid. - Checks user and domain parts of an email address for known malicious patterns. Ex:
jondoe@gmail.com,foobar@yahoo.com,idontwanttogive@gmail.comandnoemail@gmail.comwill be treated as invalid. - Checks email address domain against a known blacklist.
- Checks email address against a known blacklist of frequently used email addresses for spam.
- Checks for reserved domains. Ex: example.com is a reserved domain. Therefore, validemail@example.com is not allowed.
- Checks for Role-based email addresses. Ex: info@someorganization.com will be treated as invalid.
- Checks for safe domains. Restricts emails whose domains represents sites with adult content.
- Checks for non-business email address. Ex: *@gmail.com, *@yahoo.com, *@hotmail.com email addresses will be treated as invalid.
- Checks the IP address of the user submitting the form against a known list of malicious IP addresses.
- Add custom blocklist. You may request certain domains, emails and users to be blocked.
Available Languages
- English
- German (Deutsche)
Installation
- Unzip and upload the
dilli-email-validatorfolder to the/wp-content/plugins/directory. - Activate the Dilli Email Validator plugin through the ‘Plugins’ page in WordPress.
- Configure the plugin by going to
Settings > Email Validationpage. - Get API Key by signing up with Dilli Email Validation API.
- Paste your API key in WP-ADMIN at
Settings > Email Validationpage, verify it and then Save changes.
Frequently asked questions
Where do I obtain the API key?
Register instantly for FREE with Dilli Email Validation API to receive your API key
Is there a dashboard where I can track valid and invalid emails?
Yes, you may track it here. The dashboard URL is also accessible from within the WordPress dashboard on Settings->Email Validation page.
Will this work with Contact Form 7?
Yes.
Will this work with Ninja Form?
Yes.
Will this work with Gravity Form?
Yes.
Will this work with Jetpack/Grunion Form?
Yes.
Will this work with Elementor Form?
Yes, if you have Elementor Pro.
Can I use the same API key on different websites ?
Yes.
How can I whitelist certain email addresses ?
You can do so under plugin settings. See ‘Whitelist’ field.
Can I add a custom black list of email addresses?
Yes. Just e-mail us the e-mails you want blocked at support@dillilabs.com.
Screenshots
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 Dilli Email Validator alternatives
All email address validation plugins →| Rank | Plugin | Active installs |
|---|---|---|
| 2 |
Expert Email Validator
Adds advanced email address validation to forms using Expert Email Validator API. Prevents…
|
10+ |
FAQ
Dilli Email Validator: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 5, 2026
Is Dilli Email Validator free?
Yes. Dilli Email Validator is free to download and use from the official WordPress.org plugin directory.
Is Dilli Email Validator safe to use in 2026?
Dilli Email Validator works, but test it on a staging site before relying on it in 2026. It runs on 100+ sites, is rated 4.7/5 and was last updated 10 months ago, and scores 51/100 on our health check.
How many websites use Dilli Email Validator?
Dilli Email Validator is active on 100+ WordPress websites and has been downloaded 8,411 times since it launched in March 2018. It was downloaded 113 times in the last 30 days.
Does Dilli Email Validator work with WordPress 7.1?
Dilli 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 Dilli Email Validator need?
Dilli Email Validator requires PHP 7.4 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Dilli Email Validator last updated?
The latest version, 1.7.1.0, was released on December 23, 2025 (10 months ago).
Who makes Dilli Email Validator?
Dilli Email Validator is developed and maintained by dillilabs.
What are the best alternatives to Dilli Email Validator?
The most popular alternatives to Dilli Email Validator are Expert Email Validator (10+ installs).
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