31 best email checker tools: Verify your email lists for authenticity

31 best email checker tools: Verify your email lists for authenticity

Your sales team is only as empowered as the list of leads you provide them. To ensure that your team has high-quality leads, you will want to invest in an email checker tool that will validate and verify email addresses for authenticity.


We compare a number of email verifier tools, and explain the main differences between the tools so you can select the right tool for your needs. In this article, we’ll cover the following:

  • What is an email checker tool?
  • Common features of an email verification tool
  • 11 best email testers that check email validity
  • 15 email finder tools that check email address validity
  • 5 top sales management tools that help you find emails and reach out to leads

Before we get into the actual tools available, we’ll outline what an email checker is, and how it is different from similar email finder tools. This should help inform your decision so that you can choose the best email verification tool for your team, enhancing your delivery rate and improving outreach efforts.

What is an email checker tool?

An email checker—or email verification—tool validates email addresses to ensure authenticity. This reduces the email bounce rate and improves the delivery, open, and response rate of email outreach. They use indicators such as email format, domain information, and mail server response to determine validity.

These tools and features are often referred to as email testers, email verification, and email validation. To clearly understand what these tools do, we will differentiate them from other, related tool types below:

  • Email Finder: Find and gather valid email addresses by inputting a professional’s name, job title, company, domain, and other personal information.
  • Email Extractor: Find and extract email addresses from website domains using an automated tool, saving these manual efforts.
  • Email Guesser: Predicts business email patterns and offers potential email variations from a first name, last name, and website domain.

Common features of an email verification tool

While not all email checker tools are the same, they typically have the same common features, all supporting the function of validating email addresses. In general, check for the features that will be most useful to you when deciding on your team’s solution.

Below are a number of features that email checker tools commonly have:

  • Email verification: Validates and verifies email addresses for authenticity.
  • Real-time verification: Validates and verifies email addresses for authenticity in real-time, as opposed to waiting hours or even days.
  • Bulk email checker: Validates and verifies an entire list of emails in bulk via a CSV upload or API integration.
  • Email list filtering and sorting: Filters personal and role-based email addresses to better sort and organize contact lists.
  • Misspelled domain detection: Detects potentially misspelled email addresses and suggests modifications that the user can accept or deny.
  • Syntax validation: Automatically detects and corrects syntax errors found in emails addresses.
  • Domain validation: Identify emails that have inactive or invalid domains that are known for spam and abuse.

When choosing an email checker tool, make sure it has the functionality that your team needs built-in, or available as add-ons. While you may not see the need for a certain feature now, you may require it as you grow. If you plan on growing significantly, you may want a more robust solution with additional features.

For more on other tools, see our comparisons of email extractor and email guessing tools.

11 best email testers that check email validity

The following email checker tools exclusively specialize in email verification and validation. They focus on checking emails for authenticity, helping you reduce your email bounce rate and improve your delivery, open, and response rate.

Below are the best email checkers:

1. MailTester

Cost: $19/mo (100 emails/day) to $139/mo (10,000 emails/day) | Pay as you go from $0.0038/email or less

The best thing about it: 99% accurate email verification and validation

Availability: Web app

A variety of top-notch verification tools that test and check the validity and authenticity of email addresses, ensuring you have an improved delivery and open rate. Reduce your bounce rate from 20-30% to 1% or less. Start with 100 credits free, allowing you to test how the service works.

One thing to be aware of, when we reviewed their website in December 2020, they had issues with their help section.

2. Email-checker.net

Cost: Free | Pay for bulk verification ($15 for 1000 credits up to $2,499 for 500,000 credits)

The best thing about it: Simply enter any email address to check if it's authentic

Availability: Webpage

This browser tool makes validating emails extremely easy. Simply input an email address and it will check whether or not the email address is valid and authentic. Their email checker is a free tool. With a premium plan, you gain access to email verification features and API functionality.

3. EmailHippo

Cost: Free

The best thing about it: Verify email addresses within seconds from a web browser tool

Availability: Webpage

Input any email address, and Email Hippo will do an assessment of the email address, and output a quality score. This will help your sales team not only determine that an email address is valid, but ensure that it meets your parameters for a qualified lead. As a free email checker, it’s a great tool for startups and small businesses.

4. VerifyEmailAddress.org

Cost: Free

The best thing about it: Free, trusted email verification since 2010

Availability: Webpage

This browser tool lets you verify email addresses by simply inputting them, helping you improve your delivery and open rate on outreach emails. Check email lists for authenticity and make the most of your marketing campaigns by ensuring you have an increased delivery rate for your email outreach.

5. NeverBounce

Cost: $10/mo to $999/mo; Custom pricing (Enterprise)

Freemium Offer: 1,000 credits upon sign up

The best thing about it: Use a pay-as-you-go or subscription model to validate emails

Availability: Webpage

Clean up bulk lists of leads and provide real-time verification to ensure authenticity of your sales prospect lists. Reduce email bounce rates and make sure your prospects get your emails. Reach more recipients and amplify your email marketing campaigns.

6. Verify-Email.org

Cost: $27/mo (2,000 emails) up to $219/mo (20,000 emails)

The best thing about it: Verify via the browser tool, in bulk, or through your app using their fast API

Availability: Web app

Input individual email addresses to validate their authenticity. You can also use a bulk validation tool that will let you input a bulk list of emails. If you want to do everything within your app for added convenience, you can use their API.

7. TheChecker

Cost: $5.20 to $1,000+

The best thing about it: Buy email validation credits that never expire, allowing for flexible plans that fit your needs

Availability: Web app

Verify your existing leads in bulk, and integrate TheChecker for real-time validation on all future email leads. Identify misspelled and invalid emails before sending them, saving your sales team time and effort while also improving your email response rate.

8. EmailChecker.vip

Cost: Free

The best thing about it: Validate any email address in seconds with 90+% accuracy

Availability: Webpage

Verify individual emails with this free browser tool. Simply input an email address and test its authenticity in real-time. The tool does this by extracting the MX record from the email address and connecting to the mail server to determine if the email is likely to be inactive, invalid, or even malicious.

9. Email-Checker.com

Cost: $99/mo to $900/mo

The best thing about it: Bulk and real-time verification

Availability: Web app

Their API offers real-time validation to ensure you properly qualify your leads. Enter email addresses in bulk to verify an entire list quickly. This tool uses syntax and format checking, domain validation, and mailbox validation to determine the validity of an email address, helping you build higher-value lead lists.

10. ZeroBounce

Cost: Free (up to 100 credits/mo); $16/mo (2000+ credits); $39/mo (Custom package)

Freemium Offer: 100 credits/mo

The best thing about it: AI-powered email scoring ensures you use valid emails for your leads

Availability: Web app

Validate emails in bulk and use an AI-powered tool that will score emails for authenticity. With this email tester, you can trust your outgoing emails will reach your prospect. With a ranking attached to email addresses, you can predict your campaign success rate with much more accuracy and confidence.

11. CaptainVerify

Cost: $7 (1,000 credits) to $2,000 (5,000,000 credits)

The best thing about it: Test emails without registration attempts

Availability: Web app

CaptainVerify easily identifies whether an email address is valid or not. This will help the success of your email delivery rates. Input them individually or in bulk, checking the authenticity of emails quickly.

15 email finder tools that check email address validity

If you want more than simply email verification, there are a number of email finder tools that come with email verification built-in (or available as an add-on). We’ve sorted them based on the type of tool they are—software, web browser, browser extension—so you can easily find the tool that is best for you.

The best email finder software solution

1. Adapt

Cost: Contact for quote

The best thing about it: Automate your follow-ups to connect with prospects

Availability: Web app, Browser extension

Leverage Adapt's massive, accurate database of business contacts to build a collection of verified, valuable leads. Find professionals contact details on LinkedIn and Sales Navigator to expand your reach. With these prospecting lists, you can then automate your email outreach process to connect with leads.

2 best email finder browser extensions for Google Chrome and more

2. Name2Email

Cost: Free

The best thing about it: Find email addresses directly within Gmail for extreme convenience

Availability: Browser extension

Name2Email lets you find a valid email address by searching a name and domain—all within Gmail. Simply enter the name and domain of the person you are looking for, and Name2Email will provide a number of possible emails to get in contact with that person. Choose the right method of contacting them for best results!

3. Nymeria

Cost: $39/mo (1,000 credits) to $159/mo (10,000 credits)

The best thing about it: Collect verified emails with one cick, improving the value of your leads

Availability: Browser extension

Nymeria searches the social and professional profiles that you’re browsing, providing only verified email addresses that you can trust. This browser extension is extremely accessible, letting you collect emails with just one click. You can then export these to your sales team so they can use them to convert!

12 best email finder tools accessed via a web application

4. Hunter.io

Cost: $0/mo (50 searches) to $399/mo (30,000 searches)

Freemium Offer: 50 searches/mo + 50 verifications/mo

The best thing about it: Find emails in seconds and connect with decision-makers that matter

Availability: Web app, Browser extension

5. GetProspect

Cost: $0/mo (100 emails) to $399/mo (50,000 emails)

Freemium Offer: 100 emails/mo

The best thing about it: Search leads based on specific criteria, and generate and track prospects

Availability: Web app

6. LeadMine

Cost: $0/mo (10 credits) to $299/mo (2,500 credits) | $2,000+/mo (Enterprise)

Freemium Offer: 10 credits/mo

The best thing about it: Find, capture, and export B2B contact information

Availability: Web app, Browser extension

7. Sellhack

Cost: $5/mo (100 credits) to $99/mo (2,500 credits)

The best thing about it: Verified email addresses are ensured with a 100% bounce protection guarantee

Availability: Web app, Browser extension

8. Skrapp

Cost: $0/mo (150 emails) to $299/mo (50,000 emails)

Freemium Offer: 150 emails/mo

The best thing about it: Specialized B2B lead finders and outreach

Availability: Web app, Browser extension

9. Lusha

Cost: $0/mo (5 credits) to $199/mo (300 credits) | Custom pricing (Enterprise)

Freemium Offer: 5 credits/mo

The best thing about it: Find email addresses and phone numbers for prospective leads

Availability: Web app, Browser extension

10. AeroLeads

Cost: $49/mo (1,000 credits) to $499/mo (15,000 credits) | Custom pricing (Enterprise)

The best thing about it: Connect with decision-makers for high-impact results

Availability: Browser extension

11. LeadFuze

Cost: $132.30/mo (500 credits) to 447.30/mo (2,500 credits) | Custom pricing (Enterprise)

The best thing about it: Find leds by name or market quickly, and automate outreach campaigns

Availability: Web app

12. UpLead

Cost: $0/mo (5 credits) to $399/mo (1,500 credits)

Freemium Offer: 5 credits upon sign up

The best thing about it: Find the best leads for your industry by searching social networks and enriching contact details

Availability: Web app, Browser extension

13. LeadGibbon

Cost: $49/mo (1,000 credits) to $199/mo (20,000 credits)

Freemium Offer: Free trial upon sign up

The best thing about it: Find and validate email addresses of targeted prospects

Availability: Web app

14. Orbitly

Cost: $15 (100 credits) to $5,000 (100,000 credits)

The best thing about it: Enrich your prospects into full contact lists

Availability: Web app

15. FindThatEmail

Cost: Contact for quote

The best thing about it: It’s branded as the “Yellow Pages of Email”

Availability: Web app, Browser extension

5 top sales management tools that help you find emails and reach out to leads

If you are looking for a sales management platform that can manage lead generation, lead management, outreach, and more—all from a single solution—we can help with that too. Below are the best comprehensive sales management tools that include an email finder and email verifier.

1. Interseller

Cost: $100/mo (250 credits); $200/mo (250 credits)

The best thing about it: Manage lead generation and management from one place

Availability: Web app, Browser extension

2. Alore

Cost: $49/seat/mo

The best thing about it: Automated with AI to simplify your workflow

Availability: Web app

3. FindThatLead

Cost: $49/mo (5,000 credits) to $399 (30,000 credits)

The best thing about it: Combine lead search, email verification, and email outreach in one easy-to-use tool

Availability: Web app

4. Prospect.io

Cost: $89/mo (250 credits) to $149/mo (1,000 credits) | Pay-as-you-go $39 (250 credits) to $299 (5,000 credits)

The best thing about it: A comprehensive solution that lets you find, collect, and utilize leads

Availability: Web app, Browser extension

5. FullContact

Cost: Contact for quote

The best thing about it: Make real, valuable connections from reliable insights

Availability: Web app

Verifying email addresses before feeding them into your outreach campaigns ensures higher delivery rates, and higher quality sales pipeline, and in turn, more closed sales. If you only require email verification capabilities, you can rely on an email checker tool. If you need email verification as part of a larger email finder solution, choose a solution that includes email validation functionality.

An email tester is a great feature to utilize, significantly improving the quality of your lead lists, and increasing the response rate of your outreach campaigns. Make sure to send high-quality cold email templates to high-quality prospects, and you're sales outreach is off to a good start.