Mailgun Email Validator is a WordPress app, with a 4.1 average rating from 25 reviews, as of Aug 31, 2026.
Mailgun Email Validator is a WordPress Plugin Directory app by Jesin A. With a rating of 4.1★ from 25 reviews.
AppRanks verdict
Generated from live marketplace data — refreshed daily
Mailgun Email Validator is a well-rated WordPress app with a limited review volume. Category data on the canonical marketplace listing is currently incomplete, so AppRanks falls back to platform-wide rather than category-relative comparison for this listing. 25 reviews put it in the early-traction tier — useful for early-stage stores willing to be on the leading edge. Early-traction review counts are sensitive to single launch periods or feature events, so a 30-day re-check before bigger commitments often resolves whether the trend is sustained. Paid-only pricing means evaluating fit on the marketplace listing or via the developer's documentation before installing. AppRanks tracks rating, review count, pricing tier, and category position daily — the figures on this page reflect the most recent scrape from the canonical WordPress Plugin Directory listing.
Pros
- +Published by Jesin A — established developer track record
Cons
- −Limited review base (25) — ratings can shift significantly with new feedback
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How Mailgun Email Validator works
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Most email validators look for an @ and a .(dot) some go further and blacklist certain domain names. But Mailgun’s Advanced email validation service goes deeper and looks for the existence of the domain name, presence of a MX record and the custom ESP(Email Service Provider) grammar.
The grammar here is the rules defined by each email provider. For example, Yahoo Mail addresses can only contain letters, numbers, underscores, and one period.
So [email protected] perfectly passes the is_email() function but can never exist as it contains more than one period. Such addresses can’t escape Mailgun’s Email validation.
Why use Mailgun’s email validation service?
Performs the usual email syntax check.
Checks the existence of the email domain. So [email protected] can’t escape.
Checks if the email domain has a MX record. So [email protected] is caught.
Checks if the username complies with the grammar of its ESP (Email Service provider). Eg Gmail doesn’t allow usernames less than 6 characters and hyphens so [email protected] and [email protected] can’t get away.
Why use this plugin?
Integrates with the is_email() function of WordPress. So it works seamlessly with Contact Form 7, Jetpack/Grunion contact forms, WordPress registration form and any form which uses the is_email() function.
Kicks spam before it is inserted into the database
Ensures that the commenting process is uninterrupted even if Mailgun suffers a downtime
Works completely transparent, nothing changes in the frontend
This plugin requires a Mailgun Public API Key which can be obtained by signing up at Mailgun.
If you’re trying out this plugin on a local WAMP/LAMP/MAMP installation make sure your system is connected to the Internet for this plugin to contact Mailgun.
Available Languages
English
Serbo-Croatian by Borisa Djuraskovic
Spanish by Andrew Kurtis
Further Reading Read about Mailgun’s email validation service.
http://blog.mailgun.com/post/free-email-validation-api-for-web-forms/
http://blog.mailgun.com/post/weekly-product-update-improvements-to-email-validation-api/
Mailgun Address Validator demo and its source code
The Mailgun Email Validator Plugin official homepage.
Competitors & alternatives
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Frequently asked questions
What is Mailgun Email Validator?
Mailgun Email Validator is an app for WordPress. It currently holds a 4.1-star rating from 25 merchant reviews, and AppRanks has been tracking its public marketplace data on the refresh cadence published in our methodology. AppRanks tracks its category position, review-velocity trend, and the top alternatives in the same space. Developed by Jesin A.