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 InboxReady advantage

Better. Faster. Safer. Find out what you can do with our Email Verification features.


Cut down on bouncebacks

Customers who verify email addresses with us before they send have a 21% lower bounce rate, dramatically improving their delivery rates.

Save time for yourself and your customers

InboxReady provides the fastest Email Verification service in the industry. We minimize latency to ensure that your signup, checkout, or form submission page never slows down.

When verifying large contact lists, you can get your results in minutes instead of hours or days. 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.

Bulk Email Validations
Avoid high-risk recipients

Protect your platform from abuse without sacrificing performance

Bot attacks can turn into full-blown DDoS attacks if detected too late. Users trying to trick your platform with grammar rules? Our email checker flags 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.

Verify both current and new addresses

Check email validity at signup to make sure you’re capturing good data. Clean your list periodically to make sure it stays that way.

Real-time Email Verification API

Verify email addresses at the point of capture to reduce invalid signups with our real-time Email Verification integration.


List verification feature

Clean your subscriber list of invalid emails before you send. Our list verification feature is as simple as uploading a .csv.

Not sure whether your list needs a clean? Run a list preview for free. This test version of our Email Verification feature assesses a statistically significant sample of your list so that you can decide whether you need to clean the rest.

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It's easy to get started. And it's free.

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

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