Email Verifier: Clean Your Email List with 99% Accuracy

Most email verifiers rely on outdated databases, leaving you uncertain. MyEmailVerifier ensures accuracy with a live check, directly connecting to the recipient's mail server to confirm each mailbox exists in real time, giving you up-to-the-minute results you can trust.
You receive the most comprehensive results with MyEmailVerifier. Our bulk verifier generates a clean Excel file with separate sheets for every status: valid, invalid, catch-all, unknown, disposable, and role-based addresses. This saves you time, letting you use the results instantly without extra sorting.
Your data is completely protected. We instantly delete your email list once you download your results, guaranteeing that your information won't be stored, sold, or reused; ensuring total data privacy for your business.

Our system verifies 1,000 email addresses every minute, so even a 50,000-contact list is processed in under an hour. You get speed and quality, enabling swift, reliable campaigns without delay.
However, all those addresses are checked for syntax, DNS records, MX records, and real-time connectivity to the mail server. Even after all these steps, the average time per email is approximately 0.75 seconds. For an address lookup, results are returned in less than a second via our real-time API.
One thing we want to make clear: we don't perform shortcut verification steps simply for quick returns. While rushing through shortcut verification may give you some quick feedback, it will negatively impact your sender reputation and long-term deliverability.

An 'Unknown' or 'Greylisted' result indicates that our email verifier successfully queried the mail server but didn't receive a definitive response at the time. This isn't the same as 'Invalid'; it doesn't confirm that the address is actually invalid. Most often, it indicates either a temporary server timeout, greylisting (mail servers intentionally hold messages from a new sender for a period of time before accepting them), or a very short timeout (a few seconds) on the receiver's mail server.
Here are our recommendations:
Don't send to unknown users immediately. A hard bounce may occur if the address is no longer active.
Finally, give it 30-60 minutes, then submit your unknowns again as a separate list. 60-70% of the time, addresses will show as valid or invalid until the mail server is up and running.
If an address still shows as unknown after several attempts, consider it a high priority. Remove it from your main campaign or test it in a small, separate group to monitor bounce behavior before including it in larger sends.

Bulk Email Verification MyEmailVerifier accepts TXT, CSV, and XLSX files for bulk email verification. These include the most common export formats for email lists from CRMs, email platforms, and lead generation tools.
For TXT files, each email address must be on a separate line. For CSV and XLSX files, our system will search the email address column during upload. Therefore, you don't need to convert your file.
No matter your list size, MyEmailVerifier scales to handle anything from hundreds to millions of addresses. Lists over 500,000 are best split for faster processing and easier management, keeping large verifications simple and efficient.
If you upload a file in a format we don't recognize, you'll receive a simple message that tells you how to convert it and try again. You will not be charged for failed uploads.

No. MyEmailVerifier does not store your email addresses after your verification process is complete. This is exactly what they do with your data.
When you upload a list, you are submitting your file to our private testing center solely for verification purposes. Once your results are generated and you download your report, your file and all email data are completely deleted from our database. We do not store, archive, or back it up anywhere.
MyEmailVerifier is GDPR compliant. We only process your data on your instructions and for no other purpose than your stated purpose (email verification). We do not share your details with anyone. We do not sell your details to advertisers and have no intention of creating a marketing database.
Please rest assured that your email addresses will never appear in any third-party databases; all thanks to MyEmailVerifier. Unfortunately, many bulk email verification services take imported lists to add more data to their databases. This is not the case here. Your data is kept separate at all times and completely deleted after each operation.
If your business needs a data processing agreement for GDPR documentation, contact us, and we will prepare one.

Bulk email verification is a tool that verifies all your email addresses at once. Through bulk email verification, you will get the list validated, and invalid and potentially harmful senders will have their reputations flagged. Simply upload your email list, and within minutes, you‘ll receive a cleaned, sorted report.
The fact is, you need this for a very simple reason: email lists decay over time. People change jobs and move on, ditch old accounts and change providers. Studies show email lists lose an average of 22% of their valid addresses each year. A mailing list that you built a year ago could have thousands of dead addresses on it right now.
Bad addresses increase bounce rates and harm deliverability. Validating your list with MyEmailVerifier before every campaign safeguards your sender reputation, ensures high deliverability, and keeps your emails reaching inboxes, not the spam folder. Benefit from 100 free credits and try it yourself.

The biggest difference here is the way results are generated. Many verification platforms (even some of the biggest names in the industry) provide results from a cached database, which may reflect a test performed by another customer a few days, weeks, or months ago. Our real-time bulk email verifier checks every address in real time, providing up-to-date results about the actual status of each mailbox.
The second difference is our data policy. Some providers use the list you upload to build their databases, so in effect, your contacts are simply put into a common pool. MyEmailVerifier operates with strict data isolation: your list is used only for your purposes and is permanently deleted after you download the results.
The third difference is the richness of our results reports. We include a fully structured Excel download broken down into sheets for each result type so your department knows what they're being asked to send, what needs to be removed, and what needs closer scrutiny.

Yes. Our Email Verification API lets you validate email addresses in real time before they even enter your database. It's great for troubleshooting issues on signup, checkout, lead-generation, or any page where someone submits an email address.
The API intercepts invalid, disposable, and high-risk addresses at the point of collection, rather than "cleaning" your list of bad addresses later. So you automatically keep your list clean from the start; no extra work!
The API returns results within 1 second and easily integrates with any architecture via a simple REST call that returns JSON. The same validation you'd get using our bulk email verifier, such as syntax, DNS, MX, SMTP handshake, disposable, and catchall flags, is delivered in a lightweight response so your system can take immediate action.
You can find complete API documentation and integration guides in our developer section. If you need help getting up and running, a member of our support team can guide you through setup.

An email verifier checks the validity and security of each email address by performing several technical validations in the background. It checks whether the address exists, whether it's active and deliverable, and whether it's safe to send from it. This happens very quickly, taking just a fraction of a second to verify each email address.
First, the address-based check ensures the address is formatted correctly according to postal standards. Second, the domain-name-based check examines the domain name, and third, the MX record check determines whether an MX record exists for the domain. An MX record tells the Internet where to deliver mail for that domain. If there isn't one, mail can't be delivered.
The most important test is the SMTP handshake. We connect live to the server to verify that a specific mailbox exists, without "spamming," by actually sending an email. The server either agrees or disagrees, and we save the answer. This is what really keeps us alive.
This all happens simultaneously across your entire address list. That's why we can validate over 1,000 addresses per minute this way while maintaining a high level of accuracy.

You can see here how each email address is processed before the result is assigned.
First, we verify the syntax to ensure the address is correctly formed. Next, we verify the domain's existence and registration status. Next, we verify that the domain is configured to receive email for another address.
We also perform an active SMTP handshake with the mail server to check whether the specific mailbox exists today. We also check whether the address belongs to a disposable email provider, is a known spam trap, has a role account like info@ or support@, which will have a very low open rate, and whether the domain is a catch-all that accepts all emails regardless of whether the mailbox exists.
All checks are performed live on each address before results are displayed. We don't skip steps or use stored results. This multi-pass process allows our free email checker tool to deliver results that will directly impact your bounce rate and campaign effectiveness.

Once your bulk email verification has run, you will see that all addresses have been assigned one of the following four statuses.
Valid means the address you sent was successfully verified. The mail server checked the mailbox and received a reply that it exists and is working. These are the addresses you can safely send to.
Invalid means the address does not exist or the domain is not configured for receiving mail. Sending to Invalids will cause your message to bounce. Get them out of your list!
Catch-All: If the domain is set to accept all incoming mail, regardless of whether the mailbox exists, we can't be certain whether the individual address is valid. These pose a deliverability risk and should be sent in small test batches to the entire group.
Unknown means our email verifier was unable to receive a response from the mail server during verification. This is generally a temporary situation. Re-upload your unknown results after 30 to 60 minutes, and most of them will be converted to Valid or Invalid. The expiration date is set to expire. These addresses get undeliverable very quickly, so they should always be removed.
Role-Based is where the address is on behalf of a team/function, e.g., Info@, admin@, sales@. These addresses tend to have high spam complaint rates and low open rates because several people manage them.

Our bulk email verifiers work with every major domain and email provider, including Gmail, Yahoo Mail, Outlook, Hotmail, iCloud, and AOL, as well as Google G Suite, Microsoft 365, Zoho, and business email providers on custom domains.
Less popular domains are also supported, including account providers and local providers. Our system can perform full phone verification for any account using domains with live DNS records and MXs.
If outbound SMTP bounces back and doesn't allow external verification, we will return messages as Invalid only if the server (and this can happen due to server settings) blocks all external SMTP servers from verifying, and messages will return as Unknown. In this scenario, it will display as Unknown or Catch-All, not Valid/Invalid. This is a provider limitation, not a Bulk Email Verifier system limitation.

A simple guideline is to perform bulk email verification before sending any large campaigns, and to do so at least once every 90 days.
Email addresses deteriorate constantly. A list that was 97% valid three months ago may change significantly in the near future, depending on how it was built and the sector in which your contacts work. B2B lists deteriorate more quickly because people change jobs more frequently. A corporate email address can become inactive the moment someone moves.
If you're a single or multiple sender, or if you're sending many campaigns, sending once a month is best. This ensures your bounce rate stays below 2%, the threshold that major email providers use to throttle or block your domain. This ensures your bounce rate stays below 2%, the threshold that major email providers use to throttle or block your domain. This ensures your bounce rate stays below 2%, the threshold that major email providers use to throttle or block your domain. These lists are at the highest risk of containing bad addresses, spam traps, and disposable addresses because you haven't had any of these addresses before.

All of our email verifiers perform live SMTP verification on every address we verify, while others verify from address archives that may be days or weeks old. This is the basis for accurate verification.
All addresses listed as valid in our system produce a bounce rate of less than 2 percent when sent. The industry standard limit for healthy mail delivery is less than 2 percent. This is the limit used by high-end inbox providers like Gmail and Outlook.
What you want to do with your results also affects their accuracy. What you want to do with your results also affects their accuracy. Then, double-check before accepting unknown addresses. With our bulk email verifier, you'll have a sending list that, if not perfect, is as deliverable as possible.

Our bulk email verifier free bulk email validator detects spam traps by comparing each address to pre-created spam trap lists and using pattern-matching techniques to identify addresses that exhibit trap-like behavior, including addresses that have never been used before, domains that were previously active as legitimate sending domains but have been recycled as spam tracking domains, and addresses that have been scanned for matching recycled trap patterns.
Because spam trap databases are constantly refreshed, we compare our verifications to live data rather than frozen snapshots. This gives you the most up-to-date protection and significantly reduces the risk to your campaigns from spam filters firing before delivery.

A hard bounce is a permanent delivery failure. It occurs when you send an email to a subscription that doesn't exist, to an internet address that's no longer active, or to a server that has permanently blocked your email. Hard bounces are the most damaging to your sender's reputation because they tell inbox providers that you don't maintain a clean list.
A soft bounce is a temporary delivery failure. Causes include the receiver's inbox being full, the mailbox being temporarily unavailable, or the email being too large to be delivered. Soft bounces aren't as harmful, but email bounces email bounces should be tracked; a record of repeated soft bounces could indicate a mailbox that's signed, abandoned, or no longer active.
Our email verifier helps you avoid hard bounces altogether. It verifies that every address and domain is live and ready to accept email before you send. When you first run bulk email verification on your list to quarantine invalid, disposable, and risky email addresses, you completely avoid the root causes of hard bounces. Your sender score stays intact, your campaigns don't end up in the spam folder, and your sending domains stay off blocklists.