How to Check if an Email is Valid

Spammers have become so skilled in their craft that one must learn how to check if an email is valid to reliably distinguish legitimate emails from fake ones. In this article, we provide 5 different methods for checking if an email is valid, and most of them are so simple that anyone can follow them with ease.

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How to Check if an Email Address is Valid

If you’re like most people, you probably receive hundreds of emails every week, many of them spam. It would be impossible to manually check the validity of every single email you receive, which is why you should always start by using Clean Email to organize all of your emails into easy-to-review bundles that you can manage just as easily as if you were managing a single email.

Method 1: Send an Email to the Address

Perhaps the most straightforward way how to check if an email address is valid is to simply send an email to it. Just write something like:

“Hi, I’m just checking if this email address is valid. If you’re reading this email, please let me know.”

If you send an email like this to an email address that’s fake, your message will bounce back, and you’ll receive a message similar to the following one from your email provider:

Message not Delivered: There was a problem delivering your message to See the technical details below, or try resending in a few minutes.


Address not Found: Your message wasn't delivered to because the address couldn't be found. Check for typos or unnecessary spaces and try again.

Just keep in mind that some email providers use something that’s called a catch-all email address to catch email messages sent to incorrect email address.

Method 2: Password Recovery

Have you ever tried to recover a very old email address only to be informed by your email service that the address couldn’t be found? The three major email providers—Google, Yahoo, and Microsoft—all use a simple email address checker during the account recovery process to inform users who don’t know their password that they also don’t remember their email address correctly.

You can use this email address checker to your advantage whenever you receive an email from,, or domain. Simply go to the corresponding recovery page and enter the email address that you’re are trying to verify:

Method 3: Perform an IP Address Lookup

Don’t worry: performing an IP address lookup is much easier and less technical than it sounds. The purpose of an IP address lookup is to determine the geolocation of an IP address. Each email message you receive comes with the IP address of the server it originated from. Normally, you can’t see this IP address because it’s hidden, but choose to view the source of the message, it will be right there, under “received from.”

All you need to do is copy the IP address and paste it in any readily available online IP address lookup tool, such as the one provided by What Is My IP Address. After only a few seconds, you will see the ISP and organization associated with the IP address as well as its location. If the IP address is located in a country you wouldn’t expect, be very suspicious because someone could be spoofing it.

Method 4: Email Checker

Fake email messages are a huge problem today, which is why it shouldn’t surprise you to learn that there are many email checkers, also known as email verifiers, that can be used to validate email addresses with a couple of clicks. Free email checkers typically limit the number of email addresses you can validate in a month, but there are so many of them to choose from that you won’t ever have to spend any money just to use an email checker. While each tool is slightly different, they are all very easy to use and sometimes don’t even require you to register.

Here are our favorite free email verifiers:

1. ZeroBounce

Using email for mass communication with customers and business partners is not exactly easy these days since there are many things you need to watch out for if you don’t want to tarnish your sender reputation or even get your email address blacklisted.

Check if email is valid with ZeroBounce

ZeroBounce is a trustworthy email address checker that can effectively eliminate spam traps, fake addresses, invalid addresses, and addresses with spelling mistakes from your email lists to prevent bounces and preserve your sender reputation.

👍🏼   Pros:
  • Well-thought-out user interface
  • Many third-party integrations
  • Uses AI to enhance the accuracy of results
👎🏼   Cons:
  • Not exactly a low-cost option

Enter the email address using the form below and see how easily ZeroBounce works.

2. Pabbly Email Verification

Pabbly Email Verification is a powerful email list cleaner that can verify a long list of emails with few clicks. It has a robust and efficient cleanup mechanism that reduces false positives, eliminates unknown addresses, and removes catch-all addresses.

Pabbly best email checker in 2021

What sets this service apart from other list cleaning tools is its efficient list cleaning process. It checks each and every email manually which takes a bit longer to verify emails but ensures highly accurate results.

To avoid the bouncing of emails it sends undetectable verification emails to invalid addresses. Further, with its handy spam checker, all the spam records are removed instantly.

👍🏼   Pros:
  • Email addresses having invalid syntax are filtered out quickly.
  • It identifies and removes all the duplicate email addresses.
  • To ensure the reliability of the mailing list, all the addresses with invalid, inactive, or parked domains are eliminated.
  • This list cleaning tool employs an efficient anti-greylisting technology to save you from spammers.
  • They have a huge database of complaints any email address matching this database is deleted immediately
  • It checks high-risk keywords and TLDs contained in the email.
👎🏼   Cons:
  • Email validation results may take time due to its manual approach but the results obtained are very much reliable.

3. EmailVerifier

EmailVerifier is a highly accurate email checker that relies on sophisticated AI algorithms to detect risky emails, catch-all, fake, and disposable signups. Each day, EmailVerifier performs around 50 million verifications, which says a lot about its popularity.

EmailVerifier highly accurate email checker in 2021

Designed with the needs of enterprise and private users alike, EmailVerifier provides a bulk email verification application programing interface (API) that can be integrated into email marketing solutions for real-time email checking.

👍🏼   Pros:
  • 99% email delivery rate
  • Employs advanced AI algorithms
  • Provides an API for bulk email verification
  • Lets you perform 50 validations for free
👎🏼   Cons:
  • API documentation lacks important examples

4. MyEmailVerifier

MyEmailVerifier provides a convenient email validation system that you can use to remove all fake and invalid email addresses from your mailing list to reduce your bounce rate up to 98%. All you need to do is upload your email list, give MyEmailVerifier some time to check it, and come back for your clean list.

MyEmailVerifier provides a convenient email validation system

MyEmailVerifier can detect everything from email addresses with syntax errors to invalid, inactive, or parked email addresses. It boasts one of the lowest turnaround times in the industry, and its high-performance API provides seamless integration with website registration forms.

👍🏼   Pros:
  • One of the lowest turnaround times in the industry
  • Can reduce bounce rate up to 98%
  • Reliable syntax verification
👎🏼   Cons:
  • Doesn’t feature AI detection capabilities of valid but likely fake email addresses

5. DeBounce

With DeBounce, you can say goodbye to bounced emails by effortlessly catching all fake, deactivated, and spam email addresses. Just like with most other valid email checkers, you simply upload your email list, let DeBounce perform its magic, and enjoy a clean email list that you can use to power your marketing campaigns and increase your sending reputation.

DeBounce valid email checker for 2021

New users get 100 free credits, and additional credits can be purchased for as little as $10. Purchased credits never expire, and all prices always include taxes and fees, so you’re really getting what you’re paying for.

👍🏼   Pros:
  • Straightforward pricing
  • Anti-grey listing technology
  • Team account for enhanced collaboration
  • Excellent admin dashboard
👎🏼   Cons:
  • Some settings are more difficult to access than others

6. EmailChecker

If you want to achieve email deliverability of up to 99% without meticulously checking each and every email address in your email list manually, an email address checker like EmailChecker is just what you need. It uses a convenient pay-as-you-go pricing model that frees you from the shackles of monthly subscriptions.

EmailChecker best email validator for 2021

What we really like about EmailChecker—besides its great performance—is its user-friendly dashboard. Thanks to its drag-and-drop user interface, even complete beginners should be able to figure it out in no time.

👍🏼   Pros:
  • Pay-as-you-go pricing
  • User-friendly dashboard
  • Verification API
👎🏼   Cons:
  • Returns more "unknowns" than competing services

7. VoilaNorbert Verify

You can call this valid email address checker Norbert if you want. Norbert can verify your email addresses at an affordable price, making sure that every email you send ends up exactly where it's supposed to by performing email deduplication, syntax validation, and domain verification.

VoilaNorbert Verify email checker for 2021

To use VoilaNorbert, you don't need to sign a contract or anything like that. You simply open a user account, purchase as many credits as you want, and start verifying your email addresses. This reputable service is used by some of the largest and most successful companies in the world, including Facebook, Airbnb, Intel, Twitter, and Oracle.

👍🏼   Pros:
  • Simple email checking process
  • Accepts CSV files from Google Sheets or Excel
  • Used by many successful companies
👎🏼   Cons:
  • Shorter testing period

8. Clearout

Clearout is trusted by more than 10,000 multi-sized businesses thanks to its accurate results, affordable pricing, and accelerated turnaround. Each email address verified with this tool receives a deliverability score to help you determine whether or not you should keep it on your list.

Clearout best email list checker in 2021

Unlike many other similar tools, Clearout doesn't make you wait for results. You can simply copy and paste your list of email address and clean them without waiting.

👍🏼   Pros:
  • Bulk email verification
  • No waiting in the queue
  • Each email gets assigned a deliverability score
👎🏼   Cons:
  • No integration options with MailChimp

9. Neverbounce

Just imagine how great life would be if your emails never bounced back. Well, Neverbounce can turn that dream into reality by providing real-time email verification and cleaning services.

Neverbounce email validity checker

Trusted by the likes of Uber, Dell, Yelp, and Doordash, this email checker is a one-stop solution with connections to over 85 third-party services and a seamless API with multiple wrappers, including cURL, NodeJS, PHP, Phython, Ruby, Go, Java, and .NET.

👍🏼   Pros:
  • 1,000 free verifications
  • Excellent customer support
  • API wrappers
👎🏼   Cons:
  • There are many cheaper options out there

10. QuickEmailVerification

Just like its name suggests, this email checker is perfect for quickly verifying long lists of email addresses and removing those that are not valid. So far, it’s been used by over 90,000 satisfied customers, and it costs $0 to get started with it.

QuickEmailVerification email verifier

Developers can interact with it through its powerful API, while marketers can simply drag and drop email lists for verification.

👍🏼   Pros:
  • Integrates with many popular marketing tools
  • Free tier available
  • Team account for enhanced collaboration
  • Ensures 99% deliverability
👎🏼   Cons:
  • Slower API
  • Doesn't track emails that are used as spam traps

11. Snovio

Snovio is a comprehensive solution for lead generation and email marketing. It helps you find marketable contacts, verified their email addresses, and create and send complex email drip campaigns that deliver great results.

Snovio email validator for 2021

Since its launch in 2016, Snovio has been able to gather over 400,000 loyal users, who love it for its extensive features, easy-to-use interface, and acceptable cost.

👍🏼   Pros:
  • All-in-one marketing tool
  • Reliable email verification
  • Multiple subscription plans to choose from
👎🏼   Cons:
  • Many features are still under development
  • Limited email automation capabilities
  • Sometimes display an error message when trying to send emails

Follow our guide on how to check an email address online.

Method 5: Search the Address in Google

This method won’t tell that an email address is fake, but it can tell you that an email address is valid. It works because most people these days have a presence on the internet—some have their own websites, while others are active on social media. Major search engines like Google or Bing constantly crawl the internet, indexing everything they find. That’s why most email addresses that belong to real people can be found with a simple search engine query, while fake email addresses can’t.

Of course, some people do what they can to keep their email addresses private, but that’s where the previous 4 methods on how to check if an email is valid come in.


By combining Clean Email with valid email checkers and other methods on how to check if an email is valid that we’ve described in this article, you can keep your inbox clean and ensure that you won’t ever let a fake email message confuse you.

Clean Email Team Updated on Nov 29, 2021