Covid-19 Email List Health Check

Upload up to 100,000 emails to Mailgun and we'll run them through our industry-leading validation tool. You'll get a free report on your list health with some key takeaways.

Check Your List Free

Validate Before Sending That COVID-19 Email Blast

You want to notify your customers about your COVID-19 disaster plan, but before blasting your entire email list you should validate it first. Otherwise, many of your emails could land up in spam. Upload up to 100,000 emails and Mailgun will run your email list through our validation service for free. You'll receive a report on how healthy your email list is.

Need to validate more than 100,000 emails? Contact our sales team for special pricing on bulk email validations.


Check your list for free

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The Mailgun Difference:

Customers who validate email addresses with Mailgun before they send have a 21% lower bounce rate, dramatically improving their inbox placement.

Bulk Email Validations

Fastest validations in the industry

Need to clean a list with millions of addresses? Walk to the break room, grab a cup of coffee, and come back to a clean email list.

Cached information reduces latency in our service, ensuring your signup, checkout, or form submission page is never slowed down. And when validating large contact lists, you can have your results in minutes, not hours or days.

The Mailgun Advantage

Verify emails with someone whose business is sending email. With more than 11 billion emails sent every month, we’ve hashed the majority of active email addresses. We know what’s deliverable and what’s not.

Plus, by using Mailgun’s validations alongside our sending and other deliverability tools, you don’t have to worry about the time and effort necessary to integrate different products.

Avoid high-risk recipients

Protect your platform from abuse without sacrificing performance

Bot attacks can turn into full-blown DDoS if detected too late. Users trying to trick your platform with grammar rules? We flag that information too.


Mailgun’s email validation process keeps your sender reputation flawless

A bad sender reputation leads to 75% of all email delivery problems.

With Mailgun, you’ll never have to worry. Our email validator makes sure:

  • Your organization gains a strong sender score with top ISPs, so your IP addresses and domain names have a positive reputation. Plus, you’ll be able to easily stay compliant with data privacy and cybersecurity laws like GDPR and CAN-SPAM.
  • Your web forms catch errors and bad addresses before they cause a delivery problem. Email list cleaning is done from the start when you integrate Mailgun’s API-driven email verification service into signup forms.
  • Hard bounces directly impact your deliverability. Removing bad email addresses makes sure your bounce rate goes down thanks to the removal of spelling mistakes, temporary addresses, and disposable emails.

Two Methods to Validate

Validate emails at sign up to make sure you are capturing good data and clean your list periodically to make sure it stays that way.

Real-time email validation API

Verify email addresses in real-time at the point of capture to reduce invalid signups with Mailgun’s real-time email address validation API.

Bulk Email Validations

Bulk list validation tool

Clean your subscriber list of invalid emails before you send. Our list validation tool is as simple as uploading a .csv. Clean your lists at least every 6 months list to ensure your emails are still valid.

Not sure if your lists need a clean? Run Bulk Preview for free. This test version of Validations is performed on a statistically significant sample of your list. You’ll get the sample result, and then decide if you need Validations to clean your entire list or not

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See what you can accomplish with the world's best email delivery platform.

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