How to Verify Email Addresses Without Sending Emails in 2024?

A serious email marketing strategy involves a lot of time and effort with the sole aim of sending the right email to the right person. It’s frustrating when, despite crafting great email content, you can’t fulfill the goals only because of some wrong email addresses. Email verification techniques are the best solution to verify email addresses without sending emails in the first place. Many email marketers are not aware of email verification methods.

In this blog post, you will learn why to verify your email list and multiple email verification techniques so that you can confidently send your emails to the right prospects.

Why verify email addresses before sending emails

You must perform email verification for three reasons:

1. Improve email deliverability rate

Verified email addresses are likely to reach your recipient’s inbox because you are certain that they are authentic. This also keeps your account safe from suspension.

The recipient’s email service provider (ESP) decides the quality of the email and is known as the sender’s reputation score. The higher the score, the better is your email deliverability rate. Sending frequent emails to unverified or spammy email accounts may lead to your account suspension.

2. Avoid hard email bounces

Frequent email bounces can lead your email accounts to land up in the spam index of email service providers. Also, an undelivered email means a waste of time and effort. To eliminate bouncing, verify your email list in the first place. This helps you easily segregate the valid contacts from the bad ones and ultimately resulting in a reduced bounce rate.

3. Save time, effort, and money.

While a handful of invalid email addresses won’t harm your budget, sending emails to plenty of bad email addresses will burn a hole in your pocket. Moreover, there’s a significant waste of your marketing team’s time and efforts since there is no output.

4. Maintain an authentic contact list

Performing regular email verification helps to maintain a list of working email addresses and delete invalid, temporary, or unwanted ones.

How to verify an email address without sending emails

1. Check the email syntax

If you are getting email bounce notifications, that may be because of typographical and syntax errors. You can check and rectify them manually.

A standard email address consists of two parts-  a local part (username) and a domain. They follow the format where abc is the username and domain is the name of your company or email service, provider.

The local part is 64 characters long and includes:

  • Uppercase and lowercase Latin letters (A-Z, a-z)
  • Digits from 0 to 9
  • Special characters, such as ! # $ % & ‘ * + – / = ? ^ _ ` { |
  • Dot . (however, it should not be placed at the beginning or ending of the local part, and it shouldn’t be next to another dot)

The domain part is typically the same as the business domain, such as, or the email service provider, such as

Domain part can include:

  • Uppercase and lowercase Latin letters (A-Z, a-z)
  • Digits ranging from 0 to 9
  • Hyphen – (it should not be placed at the beginning or end of the domain part)
  • Dot . (used to separate parts of domain labels, such as subdomains, main domain, and top-level domain)

You must check to ensure that your recipient’s email address matches the standard syntax. Any other format than this email syntax is wrong and can result in a bounce.

Also, check for typographical errors, such as or, which can cause your emails to bounce back.

2. Ping the email server

Ping the server is a slow, risky yet accurate method to verify email addresses without sending any emails. To perform ping the server method, you need a tool like Telnet on Windows or PuTTY on macOS.

Follow these steps to verify email addresses:

  • Enable Telnet in Windows.
  • Look up the mail server using the command nslookup – type-mx followed by the email domain name.
  • Then connect to it using Telnet. On Windows, the command for this is telnet {mail server address} 25.
  • Then, say hi to the server by typing HELO {your domain name}.
  • Next, it’s time to check the email address. Start by typing this code mail from:<{your email address}>
  • Finally, after the response code, type rcpt to:<{the email you are verifying}>

Here’s the message for deliverable or valid email address


Here’s the message for the undeliverable email address

3. Search email address in google

Perform a direct google search for your email address. Many people register their personal or business email addresses on social media platforms such as LinkedIn, Facebook, Twitter, Instagram, and more. However, this method won’ guarantee the validity of the emails but can certainly help if you have a handful of email addresses to search for.

4. Send emails from different account

If you are unsure of the validity of the email addresses, create a dummy email address and send emails to your recipients. Further, you can manually clean up the bounced accounts from the mailing list. This method can work for a limited number of email addresses but is not recommended for long lists as it consumes more time and effort.

Avoid doing this with your primary email account for obvious reasons.

5. DNS address lookup

Use the DNS lookup method to check the domain authenticity. You also see any blacklist or spammy data related to the domain. Follow the steps to perform this method:

  • Open MXToolbox DNS. Check-in your browser
  • In the text box insert your recipient’s domain name and click on DNS check.
  • You’ll receive a list of hostnames and information on the DNS records
  • If you don’t get any such details, most likely the domain is available.

Email verifier tools to verify email addresses online

What are Email Verifier and Email Validation Tools?

An email verifier is a software that checks the authentication of the list of email addresses and organizes your email list. The authenticity of email addresses is measured using a combination of validation methods and algorithms.

After the validation ends, the invalid email IDs are filtered out, leaving behind a list of valid and deliverable email lists ready for marketing purposes.

Email verifier and validation tools perform the following checks:

  • Email Address Syntax Check
  • Spam Trap Check
  • Disposable Email Address Check
  • Role-based Account Check
  • Detecting DNS-based blackhole list (DNSBL) or Real-time Blackhole (RBL) to blacklist
  • Domain/MX Records Check
  • Final Verification

Reasons to consider email verifier tools over other methods:

  • Provides accurate results

Email verification tools tend to be very accurate. When your email verifier cleans your email list, you get a list of valid email addresses. After you run an email campaign, your recipients’ actions will be more reliable for analysis. Since you are sending emails to valid email addresses, you receive genuine responses from your prospects.

  • Speed

Compared to manual email verifying methods, the software-based approach is very fast. Just upload your list and let the automated tool do the rest.

  • Saves efforts in fixing bounces

Using an unverified email list for your email campaign invites email bounce notifications.

The service provider notes these bounces. There is usually a limit that different email service providers set, and if the number of bounces crosses that limit, you get a warning from ESPs. If you still don’t improve your list-building methods and continue receiving bounces, the ESPs will blacklist you.

When you verify your list, such a problem won’t occur. The email verification software removes all the undeliverable/invalid addresses from the list and saves you from all the trouble. That is a huge benefit of verifying your email list and will help in making your marketing strategy effective.

  • Gets good ROI

Email verification reduces the chances of bounces which helps to increase ROI. You have to spend enough on an email marketing strategy to work. There is a cost attached to each email. Hence, even a single email bounce can affect your campaign ROI.

  • Support

When you use email verification software, customer support is always there to solve your issues. For example, if you are using the AeroLeads email verifier tool, their team provides the support that you don’t get with other manual options.

Must have Email verifier tools for your business

1. AeroLeads

AeroLeads is one of the best free bulk email verifiers and email validation tools top marketing professionals use.

With AeroLeads, you can search and add prospects and leads at AeroLeads to their verified email addresses and business contact numbers.

AeroLeads software helps you find business emails and phone numbers from LinkedIn and Xing with a single click. Just head towards AeroLeads search bar or install its free Chrome plugin. Enter the name of your prospect or company, and hit search.

You can also use AeroLeads’ free email verifier tool. This is one of the most powerful and user-friendly email verification software that helps you improve the deliverability of your emails and reduce bounce rates.

AeroLeads Email Verifier

With its advanced algorithm and high validation percentage of 97%, the tool helps identify and remove invalid or non-existent email addresses. This ensures that your email campaigns reach the right people and have a higher chance of success. The software can verify emails from all domains including Gmail, Yahoo, Hotmail, corporate emails, and more.

Our Email Validation service automatically checks your email list for any mistyped emails and verifies them for 100% deliverability. Sign up for the free version and get 100 free credits on sign up—no need to add a credit card while signing up for the free version. You can buy more credits whenever you need to verify more emails and unlock additional features like bulk email verification, etc.

2. MyEmailVerifier

MyEmailVerifier is a popular free bulk email verifier tool that helps remove junk emails and reach more people. This email validation tool performs syntax verification, role account detection, checks domain/MX records, and temporary unavailability detection.

MyEmailVerifier is known for its improved validation of Yahoo email addresses. It also detects in real time if the email address belongs to a free domain. Besides, the SMTP server responds with the exact reason for an email address’s invalid status.

MyEmailVerifier helps reduce email deliverability problems via its latest anti-greylisting technology, which identifies greylisting-enabled domains. Their email validation API can also identify spam domains and bot-generated emails from the email address list.

3. EmailListVerify

EmailListVerify is one of the powerful free bulk email verifiers and email validation tools used to eliminate spam traps, hard bounces, and disposable, or catch-all emails. With EmailListVerify you can improve the sender’s reputation, deliverability, and conversion rate of your emails by sending them to the real audience.

This tool also helps you improve the ROI of your email campaigns. EmailListVerify helps you eliminate those spam traps and hard bounces that harm your reputation. With this, your emails won’t end up in spam folders.

EmailListVerify performs domain and SMTP validation, spam trap detection, syntax errors validation, MTA validation, etc.

4. QuickEmailVerification

QuickEmailVerification is one of the most advanced and accurate free bulk email verifiers and email validation tools top marketing professionals use. It’s a reliable email list cleaning service that makes you confident of increased open rates and deliverability.

Their powerful real-time email verification API prevents fake emails from entering your email list. Once your sales team receives a verified email list, they can feel confident to move ahead. The QuickEMailVerification tool provides freedom from the baggage of fake and invalid emails that will never produce desirable results.

QuickEmailVerification is beneficial for all industry sectors, including e-commerce and retailers, Technology Platforms, Marketing Agencies, Finance, and Education.

5. ClearOut

Clearout is one of the best free bulk email verifiers and email validation tools that guarantee 98% accuracy in the results. It doesn’t let any types of honey spots, hard bounces, and non-valid emails mess with your email deliverability. It offers a real-time email verification service.

The tool’s advanced algorithm removes all duplicate email IDs and identifies catch-type addresses to avoid emailing and improve email deliverability hygiene.

Besides, this tool checks against known DNSBLs and URI DNSBLs to stay away from the honeypot. ClearOut also verifies mailbox error by verifying all types of mailbox errors without sending any payload to the given email address.

6. UpLead

UpLead Email Verifier is a powerful and reliable email verification tool that helps businesses and individuals improve the accuracy of their email lists. With UpLead Email Verifier, your email campaigns will not be affected by bounce rate. It offers a 95% accuracy guarantee. One of the unique features of UpLead Email Verifier is that the credits remain untouched if you choose not to download.

How frequently should you perform email verification?

Though email verification is important for email marketing it should not be performed excessively. Perform email verification in the following situations:

When you build a new email list

If you have started a new campaign and built a new mailing list for the same, verify those emails using an email verifier. Once verified, you can confidently send emails and won’t need to perform verification again during follow-ups.

You witness a rise in bounce rates.

If you see a sudden rise in your email bounce rates, it’s time to verify your list. As you know, too many email bounce notifications can negatively affect your email account.

Periodic email verification

Verify your emails periodically once in a quarter or six months.

Verify your email list today!

As you can see, email verification assures you of a clean email list. It also helps you increase the deliverability of your marketing campaigns by sending emails to real, high-value contacts. The above-mentioned email verification techniques are useful, but I prefer email verifier tools to get accurate results. Choose your email verifier based on your business requirements.

Which email verifier techniques and tools have you tried and tested? Share your experience with us via comments now.

Other Recommended articles from AeroLeads:

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Top email finder Alternatives in 2023

Best RocketReach Alternatives in 2023

Try AeroLeads for Free! Signup Today itself.

For any queries feel free to contact us at or chat with our support team from our homepage.



What is email verification?

Email verification is nothing but the process of checking and verifying whether an email address is valid or exists, without actually sending an email to it.

Why email verification is important?

E-mail verification is very important because it helps to ensure that your emails reach the right people, by improving the chances of success and reducing the number of bounces.

How can I verify an email address for free?

You can verify any email address for free by using manual methods such as pinging the server, performing the Google search, sending emails from a dummy account, IP and DNS lookup, and checking for the standard email syntax. Refer to the above article for more details on each method. Further, many email verifier tools offer free trials to verify a handful of email addresses. If you have a long mailing list, better purchase a software subscription.

What is the best free email verifier?

Top-quality email verifiers aren’t available for free. However, they do offer free trials. AeroLeads is a highly-reviewed email verifier tool used by many top marketing professionals. AeroLeads automates the process of email searching and boosts your lead generation efforts by creating a list of unique emails in less time.

Is it possible to verify emails in bulk?

Yes, most email verifiers let you upload and verify large lists of emails in bulk. However, AeroLeads email verifier has the highest email validation percentage of 97%, which is best according to Industry standards.

How do I verify email addresses in bulk?

A manual email verifying method is not recommended for bulk email verification as they are time-consuming without any guarantee for accuracy. Use email verifier tools such as AeroLeads, Clearout, Hunter, EmailListVerify, and more as they provide results accurately and within minutes. Go for their free trials and see which software works best for you.

About Rashmi Chimmalgi

Rashmi Chimmalgi is a professional SEO/B2B SaaS Freelance Writer and helps potential business professionals to fulfill their website Content Writing and Lead Generation needs. Meet her on LinkedIn.

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