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How to Use This Free Email Checker

Verifying emails with our free checker couldn’t be easier. Just type in or paste an email address and our tool will do the rest.

This free email verifier is perfect for testing individual addresses. Why risk an email not being delivered? If you have a new subscriber, or spot an address in a list you’re not sure about, run it through the email verification tool. It gives you extra peace of mind and improves results. 

To get started with our email checker, everyone gets 5 free verifications. Need more?

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What is Email Verification?

Email verification is about checking that an email address is working and real. Email addresses don’t always work. They may have typos. They may no longer be in use, fake or temporary addresses that stop working after a bit.

If any of these apply, you’re wasting your time sending to them. Your email won’t be delivered, known as a ‘bounce’. It isn’t just a waste of time and effort. High bounce rates hurt your sender reputation and deliverability. You’ll find it harder and harder to improve your email deliverability rates. This can be a nightmare for email marketing. Low deliverability means low conversions.

Email verification is also a way to improve the quality of your leads. Do you want to be sending to generic admin@ or office@ email addresses, or to named individuals? Online list cleaning tools can weed out email address types that lead to poor engagement. 

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Why You Need to Verify Emails

Successful email marketers know the importance of having a large email list. For email marketing campaigns to work, you need subscribers. But building a big list isn’t a guarantee for success. Your campaign also needs to reach the inbox and then stand out enough to be opened and get clicks. One tip is to build good looking emails with a good email template creator.

Email verification is about making sure emails land in inboxes. There are several reasons why this is an important step. Subscribers may mistype their email addresses. Or sign up with fake or disposable emails just to get your freebie.

Another reason is that email addresses don’t stay active forever. Email accounts get shut down after periods of inactivity. If you have old addresses in your lists that are no longer active, your messages will bounce. If a group of email addresses are active, but the engagement from them is low. Try to reengage and reactivate subscribers before removing them from your list.

Covering all these bases and more, our free email verifier will help you:

  • Keep your lists clean: Filter out incorrect, inactive and fake email addresses.
  • Boost email deliverability: More legitimate and correct email addresses mean higher delivery rates.
  • Lower bounce rates: Every non-delivery gets recorded as a ‘bounce’. Bounces can be ‘hard’ (permanent non-delivery) or ‘soft’ (temporary). Both negatively affect your sender reputation.
  • Protect your sender reputation: Email service providers flag potential sources of spam with spam traps. This makes it even harder to land in inboxes. That in turn helps more emails land in inboxes.
  • Improve performance against key metrics: High deliverability is the foundation of campaign performance. More emails in inboxes mean more opportunities for opens, clicks and conversions.
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How does email verification work?

The most basic email checkers simply tell you if an email is working, yes or no. But this email verification tool goes further. It tests emails on several different criteria. And gives you a breakdown of the results. So you can make fully informed decisions about what to do.

Here are the different ways we verify email addresses:

Deliverability testThe simplest way to test an email address is the so-called ‘ping’ test. This simply sends a signal to an account known as a ping. If the email address pings back, it’s active and can receive emails.

Syntax checks

Every email address has to follow a fixed format to be valid. Excluding the @ sign, valid email addresses have 3 parts:

  • The username before the @ sign. This can have a maximum of 64 alphanumeric characters. Certain special characters are allowed.
  • The domain name after the @ sign. It could be the name of a free email service provider, like Gmail or Outlook. For business email accounts, this is often the domain name of the business.
  • The domain extension or top-level domain. This is separated from the domain by a dot, like .com or .org. 

Syntax checks scan email addresses to look for any variations from this formula. Automatically generated spam email addresses often use invalid characters, for example. And syntax checks can identify some typos, like a dot or @ in the wrong place. The details of syntax checks can help you decide if an invalid address is a genuine mistake. Or if your sign-up forms are being targeted by bots.

Domain checks

Domain checks are linked to syntax checks. You might have an email address with a made-up domain extension. That would get flagged by a syntax check.

But domain checks dig a little deeper. They look at whether the domain itself is valid for a start. Like individual email accounts, whole business domains can expire. This for instance happens when a business shuts down. So domain checks help to weed out old and inactive addresses.

A mismatch in domain and domain extension is also a tell-tale sign of a fake address. Spammers will often ‘spoof’ an email account by using a genuine domain name but registered to a different domain extension. Domain checks pick up mismatches like these.

One way email verification tools check domains is by using mail exchange entry (MX) records. An MX record is the registration record for a valid address. Fake accounts won’t have a valid MX record.

Blacklist checks

If your sender reputation falls too far, you risk getting added to a blacklist. This will mean any emails you send will go straight to the spam or junk folder of most email accounts. Or they may even be blocked completely.

Blacklists can also help email marketers. Email verification tools scour blacklists to look for addresses they are checking. If they find a blacklisted address, it is identified as a known spam address. If you keep sending to blacklisted addresses, your sender reputation suffers.

Address type reports

Some types of email addresses work better for email marketing than others. As a rule of thumb, you want to be targeting individuals’ main accounts. The ones they check regularly. 

An email validation service can flag different types of accounts in your contact list. This gives you the opportunity to filter them out. Account types they can identify include:

  • Catch-all email addresses: These will deliver an email to a domain even if the specific username doesn’t exist. They are common with business accounts. If a contact of yours leaves, for example, emails will be sent to other inboxes in the same domain. 
  • Role accounts: Some email marketers prefer not to send to generic email addresses. Lots of companies use addresses like [email protected] or [email protected]. These tend to be shared accounts with much lower engagement rates.
  • Disposable email addresses: There are lots of disposable email address services out there. Users like them because they can be used to sign up for a special offer or freebie. Once the promotion is redeemed, the account closes. They won’t get follow-up emails in their main account.
    But disposable email accounts are a nightmare for email marketers. You capture what you think is a new lead, and then bam! The account no longer works, and your campaign messages start bouncing. You can avoid this by identifying and removing temporary accounts as soon as they are added.
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FAQs about our Email Checker and Email Verification

How can I check if an email is real?

You can check if an email address is real using our free email verifier. It’s a really simple tool designed to quickly check if an email address exists and is valid. All you have to do is type or paste the email in the box and click “Verify”. The email verifier runs several different checks instantly and shows you the results. As well as telling whether an email is real or fake, you can also see if an address is in use or inactive.

If you have lots of emails you want to verify in one go, you can use Bouncer. It’s a bulk email verification service to help you easily verify your whole email list. 

Get 100 free email verifications here

Does this email checker send an email to verify an email address?

No, this free email checker doesn’t send an email to verify an email address. It runs different tests to check if an email address is valid. 

One of these is known as sending a ‘ping’ to the email server. A ping isn’t an email. It’s a request to the mail server to check if an address is active. If it is, the server pings back. This is a standard email deliverability test and means messages will land in the inbox.

Pings are also sent to ask mail servers to check mail exchange entry (MX) records for a domain. This will flag up fake emails that haven’t been registered properly. 

Can I verify multiple emails?

Yes, you can verify 5 emails with our free email verifier without signing up. Sign up here to check 100 email addresses for free.

If you have more to check or want to bulk verify lots of email addresses at once, we recommend Bouncer. Tools like Bouncer can clean invalid addresses from an entire email list in one go.

What kind of email addresses should I avoid sending emails to?

You should avoid sending emails to any address that you can’t verify belongs to a real person. Or to a named individual. A fake email address in a real person’s name could be a spoof used by hackers and identity thieves. Or it could be a spam trap used by internet service providers to catch senders who don’t verify their email lists. Sending to these types of addresses will damage your sender reputation. And result in more of your emails landing in the spam folder.

You should also avoid sending to catch all addresses. This type of email address belongs to the domain only, not to individual users. Businesses often use them. It means an email will be accepted by the servers if the domain is right, even if the username doesn’t exist. But engagement on these email addresses is much lower.

Be careful of role addresses, too. These are the types used by businesses that have a job role or department rather than a username. So things like marketing@ or office@. They are often shared inboxes. As it’s hard to target a specific person, there’s lower engagement and a higher chance of being reported as spam.

What’s a real-time email checker API?

A real-time email checker API is an email verification tool that you can add to web pages where you have your sign-up forms. This means you can verify an email address automatically the moment someone signs up. For any typos, domain, or email deliverability issues, the email gets filtered out at the source. 

This is a great way of keeping your contact lists clean and free of bad email data. An email verification API also saves time compared to manually running verifications. 

How do I keep my emails out of spam and in the inbox?

There are lots of things you can do to keep emails out of spam folders. The first thing is to avoid spam complaints. If you send people emails they didn’t ask for or that aren’t relevant to them, they’re more likely to flag them as spam. That will harm your sender reputation. Email servers know when senders’ domains have been flagged for sending spam. It makes it more likely that future email campaigns will be marked as spam. Even before recipients see the email.

Bounces also harm sender reputation. A bounce is an email that isn’t delivered. Bounces can be ‘hard’, which means delivery is permanently impossible. This happens when you send to fake or inactive email addresses. Or bounces can be ‘soft’ or temporary. This happens when an inbox is full. It does also suggest an email account isn’t used very often. 

If you reduce bounces and improve sender reputation, you will land more emails in inboxes. The best way to do this is to practice good list hygiene and regularly verify email addresses. An email verifier will help you identify fake and dormant email addresses. Not sending to them will protect your sender reputation.

Get 100 free email verifications here

What happens if I send an email to a fake address?

If you send an email to a fake address, there is a high chance that it will bounce. If the address doesn’t exist, you’ll get a message back saying the email couldn’t be delivered.

Every mail server tracks the bounce rate of email senders. If it gets too high, that hurts your sender reputation. A low sender reputation is a warning to internet service providers that you are sending spam. Or at the very least, not keeping your lists of customer data clean. This increases the chances of your messages landing in your contacts’ spam folder.

Are fake or invalid email addresses causing you to lose money?

Yes, fake emails and invalid addresses cause you to lose money. Good returns on email campaigns depend on high deliverability, high open rates and high click rates. These are all necessary to get a good conversion rate. But its starts with emails landing in people’s inboxes in the first place. 

Most email marketing tools charge based on the size of your contact list. Fake and invalid emails count as contacts too. It increases your marketing costs to have these contacts on your list but they won’t engage with your emails or buy from you. That’s just wasting money.

The more fake and invalid addresses you have in your contacts list, the more bounces you will get. After a while, low deliverability will get noticed by email providers. This will harm your sender reputation, meaning more of your emails get flagged as spam. That means even fewer emails land in inboxes. Open rates, click rates and conversion rates all fall as a result, costing you money.