An email verification service is a tool that checks whether an email is real and minimizes bounce rates, protecting a business’ domain from being flagged as a spam sender and blacklisted by email providers. We examined 20 of the most-used programs and narrowed them down to the top six. We compared and contrasted the price, features, and accuracy of these six, arriving at the best overall, as well as who each one is right for.
Top 6 Email Verification Services 2018
Email Checkers and Verifiers
(Best overall) Businesses that want the highest verification accuracy for single addresses or bulk lists at a competitive price.
Businesses wanting a tool that can confirm emails and populate information from attached social profiles.
|Organizations that have lists broken out by marketing affiliate for better partner management.|
|Businesses needing a more accurate way to verify international email addresses.|
|Companies that need to clean large email lists and can benefit from bulk volume discounts.|
|Businesses that want a monthly recurring subscription for email verification.|
How We Evaluated Email Verification Services
All email checkers and verifiers perform the basic function of checking format, domain, and the presence of a mailbox on a server using SMTP tests, helping you groom your email lists and reducing your risk of being marked as spam. The variability around email checkers and verifiers and what really separates the best from the rest is accuracy, price, time, friendliness of user interface, and data security.
The criteria we, therefore, used to evaluate the best include:
- Email Checks – A good email checker should include format, domain, and SMTP checks at a minimum as part of its validation service. However, many programs include additional proprietary tests.
- Accuracy – We compared guaranteed email delivery rates, looking for products that had guarantees exceeding 95 percent.
- Price – Some services charge a fee per month, while others are structured by the number of emails you verify. In order to compare price fairly, we divided monthly fees by the maximum number of email address verifications you can perform each month.
- Speed of Processing – We compared processing times each service requires to complete verification checks and return a cleaned email list to you ready for prospecting.
- Ease of Bulk Verification – We checked to see how each program handled bulk email checks and what limits they placed on email list size.
- Security – We reviewed each service’s security policy regarding how they protected the contents of your email lists once uploaded.
- Ease of Use and Functionality – We compared how easy it was to verify a single email address, a bulk list of addresses, and any additional functionality.
As a result, we determined NeverBounce to be the overall best email checker and verifier service for small businesses lead generation based on its accuracy, processing speed, and price per email. While we believe it provides the critical services needed to ensure that their email lists contain only high-quality addresses, some comparable products may have additional functionality or pricing structures that can better support your specific business needs.
If you are still trying to grow your email list as well as clean it, you may decide to purchase an email list from a third party. Toofr provides email lists that have been highly curated in categories such as Global SaaS businesses or Etsy Sellers for as little as $9 per month. What’s more, you can use Toofr as an email address finder. Check them out today:
Best Overall Email Verification Service for Small Business: NeverBounce
NeverBounce is the most accurate single email or bulk list verification service with a 99.9 percent accuracy guarantee and includes a range of integrations at a reasonable price. NeverBounce lets you verify up to 1,000 addresses each month for free and works with mass email marketing software such as MailChimp, iContact, Drip, and Marketo, among others. This makes it the best overall email verification service for people wanting a mix of accuracy, price, and services.
NeverBounce lets you verify 1,000 free addresses each month with their API. From there, prices start at $0.008 for a single email and bulk pricing ranges from $80 to $10,000—>or $0.008 per email to $0.001 per email—for bulk lists containing anywhere between three and ten million addresses.
The volume rates for NeverBounce include:
- Email lists with 1 – 10,000 emails: $0.008 per address (up to $80)
- Email lists with 10,001 – 100,000 emails: $0.005 per address (up to $500)
- Email lists with 100,000 – 250,000 emails: $0.004 per address (up to $1,000)
- Email lists with 250,000 – 1,000,000 emails: $0.003 per address (up to $3,000)
- Email lists with 1,000,000 – 3,000,000 emails: $0.0025 per address (up to $7,500)
- Email lists with 3,000,000 – 10,000,000 emails: $0.001 per address (up to $10,000)
With NeverBounce, you can check a single email address or run tests on a bulk list. NeverBounce was developed as an internal tool for a marketing agency and considers many of their tests as proprietary. Therefore, it is difficult to compare them to the competition based on the types of tests they conduct. However, they have the best guarantee for accuracy of all the tools we reviewed (at 99.9 percent) and some of the fastest turnaround times.
NeverBounce’s service features and benefits include:
NeverBounce only uses real-time data in its verification process. Their tests include mail server validation that includes SMTP tests as well as internal proprietary checks. NeverBounce automatically removes duplicate addresses at no charge, which not all services do, and eliminates high risk or potentially harmful addresses from your list.
The specific NeverBounce tests include:
- Mail Server Validation – This check uses SMTP to verify that a user’s mailbox exists
- Domain Health Check – This check verifies that the email domain is live
- DNS and MX Validation – Servers are checked for availability
- Syntax Checks – The service looks for issues like extra spaces in an email address and an incorrectly placed “@” symbol that are likely data entry errors which might prevent a message from being delivered
While processing times depend on the size of the email list, NeverBounce can process a list of 10,000 email addresses between two and ten minutes, which is the fastest advertised rate of any of the products we compared. A list of 100,000 emails could take as long as 45 minutes, which is half the time you might be expected to wait with many of the other services.
After the test is complete, NeverBounce provides users with a segmented report that can be downloaded and modified in Excel or a similar program. Its report also shows addresses they’d consider high risk, leaving it up to you to either keep an address on your list or remove it based on their recommendation.
You can also view your results using their web-based dashboard or connect the tool with your favorite email marketing platform. In addition to automated tests, lists are reviewed by human team members before being returned to you.
NeverBounce is in compliance with General Data Protection Regulations as well as with the EU-US and Swiss-US joint Privacy Shield Framework. Email lists uploaded to their site are never resold and they do not send any email to your contacts during their verification process.
What NeverBounce Is Missing
NeverBounce isn’t missing much in terms of email verification or email list cleaning. However, NeverBounce will not try to fill in the missing fields on your email list, such as first name, last name, or title based on what can be found in social media like ZeroBounce does. This means that some manual work is still required.
What Users Think About NeverBounce
NeverBounce users say the service is easy to use and does a great job in letting them know which email addresses are most likely to bounce. Users have said, however, that they would like more clarification on why certain email addresses are returned as unknown.
Best Email Verification Service for Social Profile Matching: ZeroBounce
ZeroBounce, a new player in the market, can verify individual or bulk addresses with 98 percent accuracy at an average price. ZeroBounce can pull data from sources like social profiles and attach it to your verified email lists, giving you the ability to make your emails more personalized as well as learn more about your contact list. This makes it perfect for marketers who want to populate blank contact fields such as name, gender, or location for verified addresses.
ZeroBounce offers 100 free validations and then credits you can purchase afterwards. ZeroBounce provides volume-based pricing for credit packs, giving you the option to pay for what you need. The price per bulk credits ranges from $500 to $3,500, or between $0.005 and $0.0007 per verification, which puts it on par with NeverBounce.
The volume rates for ZeroBounce include:
- Email lists between 5,000 and 100,000 emails cost $0.005 per address, or up to $500
- Email lists up to 250,000 emails cost $0.00275 per address, or up to $687.50
- Email lists up to 500,000 emails cost $0.0022 per address, or up to $1,100
- Email lists up to 1,000,000 emails cost $0.0016 per address, or up to $1,600
- Email lists up to 2,000,000 emails cost $0.0012 per address, or up to $2,400
- Email lists up to 5,000,000 emails cost $0.000875 per address, or up to $4,375
- Email lists with 5,000,000 emails cost $0.0007 per address, or $3,500
ZeroBounce’s service includes a spam Trap Test and other verification tests that can protect against an email bouncing. It also includes abuse email checks, which remove known email complainers from your list. Unlike NeverBounce, the service will also improve your email list by filling in blank fields, such first name, last name, gender, location, or IP registration information.
ZeroBounce’s service features and benefits include:
ZeroBounce looks for potential spam traps as well as domains that are known for abuse, spam, or bot behavior. This includes looking for emails that belong to people who have a history of marking messages as spam as well as identifying disposable email addresses and catch-all domains. While running its checks, the service will try to match an email with social media profiles and will update missing fields in your list with any information it finds.
This feature, known as social append, gives you the ability to send more personalized emails and reduces the risk of emails being sent with missing mail merge fields. This also increases the likelihood your email will be read. For additional tips an examples of introductory messages to help you get started, read our article on Introduction Email Templates.
Most of the time, ZeroBounce will start processing your email list the second it is uploaded to their servers. However, it is possible that service can be delayed if there are several people submitting lists at the same time. Once your list is in the queue, ZeroBounce’s verification service typically takes one to three hours to validate a list of 100,000 email addresses. A list of one million addresses might take seven hours.
ZeroBounce provides a downloadable report once verification checks are complete with a 98 percent deliverability guarantee, which is almost as good as NeverBounce’s guarantee. This report is password protected and includes flags that identify high-risk emails as well as additional information about contacts gleaned from social media checks. Users can also specify the range of data to include in the report.
ZeroBounce is committed to security; it is registered with the Better Business Bureau and approved for the EU-US Privacy Shield. Your data is kept on their secure servers (which are backed by Cloudflare). Your data is encrypted with military-grade ciphers and once deleted, are completely removed from their system. If you don’t delete it yourself, ZeroBounce will delete your data for you after 30 days.
What ZeroBounce Is Missing
What Users Think About ZeroBounce
ZeroBounce’s users highly recommend the product. They say the service is quick and easy to use and has given them higher delivery rate percentages than ZeroBounce’s advertised 98 percent guarantee. However, the longer time it takes to verify versus NeverBounce can be an issue.
Best Email Verification Service for Affiliate Management: Xverify
Xverify helps businesses improve their email delivery by performing common checks on syntax and domain, as well as employing their built-in Send Shield technology, with a 98 percent accuracy guarantee. In addition, they provide report segmentation tools specifically designed for managing affiliate marketing partner lists. Therefore, Xverify is best for businesses that want to clean their lists and identify which affiliate marketing partners are sending the highest quality leads.
Xverify offers 100 free verifications as well as bulk credit packs, which range from $5 for 500 verifications ($0.01 per email) to $2,500 for 2,500,000 verifications ($0.001 per email). There are no additional set-up fees or minimum requirements. This makes it a less expensive option for smaller lists than NeverBounce.
Xverify offers the following pricing for bulk verification:
- 500 verifications: $5
- 1,000 verifications: $10
- 2,500 verifications: $25
- 5,000 verifications: $40
- 10,000 verifications: $70
- 25,000 verifications: $150
- 50,000 verifications: $250
- 100,000 verifications: $400
- 250,000 verifications: $750
- 500,000 verifications: $1,000
- 1,000,000 verifications: $1,500
- 2,500,000 verifications: $2,500
Xverify performs checks such as domain, syntax, and blacklist monitoring to help you clean your email of potential threats. However, it also provides additional checks such as name verification, which can flag emails that contain profanity or special characters, and also includes segmented reporting tools that show the quality of email address broken out by affiliate marketing partners.
Xverify’s service features and benefits include:
After you enter an email on the website or upload a list, Xverify checks to see if an email exists on a domain and can check Yahoo and Gmail, as well as AOL and Hotmail, using common syntax, domain, and SMTP checks. Xverify also identifies the addresses of people most likely to flag your messages as spam and checks for temporary or disposable email accounts.
The time it takes for Xverify to process a list of addresses will depend on the size and complexity of the email list. A list of 10,000 consumer addresses might take 15 minutes using Xverify, while a list of business records might take 30 minutes. This puts it in the same category for speed as NeverBounce. It might take as long as three hours to process 100,000 business records. The reason this time is higher is because B2B servers can be configured differently.
Xverify only performs real-time verifications, never caches data, and guarantees that their results are 98 percent accurate. Like other tools, their report breaks out email addresses into categories such as valid, invalid, or unknown, with reasons an address is considered invalid. Unlike the others, Xverify can also segment its Excel-based reports by source, giving users the ability to gauge the quality of leads coming from individual affiliate marketing partners.
Xverify is compliant with the EU-US Privacy Shield Framework. They do not sell, trade, or otherwise transfer any information found within the lists you provide with third parties, and data is stored on an encrypted secure server.
What Xverify Is Missing
Unlike NeverBounce and ZeroBounce, Xverify does not claim to be able to detect spam traps, as it argues spam traps are always changing and recommend users only upload opt-in data for email verification. Its lack of integration with sites like MailChimp and lack of dashboard-style reporting make cleaning your email lists a more manual process. For this reason, Xverify is best for businesses that manage their lists internally rather than with a third-party tool.
What Users Think About Xverify
Best Email Verification Service for International Lists: BriteVerify
BriteVerify utilizes servers deployed around the world to ensure that an individual email address or bulk lists are verified against their appropriate country of origin with 98 percent accuracy guarantee. Their worldwide distribution makes them better at identifying international patterns. Therefore, BriteVerify is best for businesses with a list of predominantly international addresses.
The first 250,000 verifications each month are only a $0.01 each. After that, BriteVerify provides volume-based discounts that range from $.008 per email for more than 250,000 verifications to $0.005 per email for email lists of more than 1,000,000 addresses. This makes it more expensive than most.
BriteVerify’s volume price breaks are as follows:
- One to 250,000 emails cost $0.01 per address, or up to $2,500
- Email lists with up to 500,000 addresses cost $0.008, or up to $4,000
- Email lists with up to 1,000,000 addresses cost $0.006, or up to $6,000
- Email lists with up to 2,000,000 addresses cost $0.005, or up to $10,000
You can upload your email list for verification by dragging and dropping it into the web-based user interface. You can also integrate BriteVerify with third-party tools like Constant Contact or MailChimp. Like Xverify, you can also verify U.S. phone records. Once your list has been uploaded, the service provides you with an estimated cost, giving you a chance to cancel or confirm.
BriteVerify’s service features and benefits include:
You can import up to 1,000,000 records at a time using BriteVerify’s self-service tools. From there, BriteVerify checks that an email address is in the proper format and then uses its proprietary, geographically-aware verification algorithm to verify an address against specific checkpoints for a domain’s country of origin. This makes it more adept at identifying local patterns with regards to address naming conventions or common disposable addresses.
Processing times will vary depending on the size and complexity of a list. However, most users should expect the verification checks to be complete within 20 minutes, putting it on par with Xverify. For real-time verification of a single address, BriteVerify also offers an API that can be connected to your website or point-of-sale service.
BriteVerify provides users with a dashboard-style report that shows the list verification process as well as results in an easy-to-read, graphic interface. Users can then decide to download the entire report or just the emails that meet filters, such as valid, invalid, or risky. 98 percent of emails verified by BriteVerify reach their intended inbox.
As BriteVerify has servers in over 150 countries, its security and privacy policies are in compliance with the strictest controls and international regulations such as the General Data Protection Regulation. Once you decide to delete a list from BriteVerify, it is completely removed from their server. They do not store or maintain a backup.
What BriteVerify Is Missing
BriteVerify does not include a duplication check, meaning you will be charged the total number of email addresses on your list even if some of those addresses are duplications. Also, like Xverify, BriteVerify also does not claim to be able to remove spam traps.
What Users Think About BriteVerify
Users of BriteVerify say the tool is easy to use, but does return false positives and would like additional third-party integrations. They also recommend you call and ask for discounts, as it is one of the more expensive products we compared (especially for email lists with less than 250,000 addresses). Therefore, if your email list does not include many international addresses, NeverBounce provides improved accuracy and better speed at a more budget-friendly price.
Best Email Verification Service for Bulk Email Lists: Bulk Email Checker
Bulk Email Checker verifies addresses against more than seventeen tests at the lowest price of all of the products we compared. Lists are also checked against more than 780 known disposable email providers, as well as your account’s blacklisted addresses, with a 97 percent accuracy guarantee. However, its service is slower than other similar products. That being said, its price and value make it perfect for larger lists, with discounts on up to 25 million email verifications.
Bulk Email Checker’s Pricing
Bulk Email Checker offers credits that will never expire. Pricing ranges between $2.95 for 1,000 verifications to $3,299.95 for 25,000,000 verifications. That’s $0.00295 and $0.000132 per email address, respectively, and a fraction of the cost of NeverBounce. You can also check 10 email addresses for free every day.
Bulk Email Checker’s volume price breaks are as follows:
- 1,000 verifications cost $0.00295 per address, or $2.95
- 5,000 verifications cost $0.00119 per address, or $5.95
- 10,000 verifications cost $0.000995 per address, or $9.95
- 25,000 verifications cost $0.000958 per address, or $23.95
- 50,000 verifications cost $0.000899 per address, or $74.95
- 250,000 verifications cost $0.0006 per address, or $149.95
- 500,000 verifications cost $0.00056 per address, or $279.95
- 750,000 verifications cost $0.000467 per address, or $349.95
- 1,000,000 verifications cost $0.00041 per address, or $409.95
- 2,500,000 verifications cost $0.000276 per address, or $689.95
- 5,000,000 verifications cost $0.0002 per address, or $999.95
- 10,000,000 verifications cost $0.000178 per address, or $1,779.95
- 25,000,000 verifications cost $0.000132 per address, or $3,299.95
Bulk Email Checker’s Features
Like NeverBounce, Bulk Email Checker’s service can integrate with third-party mass email marketing products such as MailChimp, Mailjet, Mailgun, Postmark, and SendGrid. Bounce, spam complaints, and unsubscribes feedback from those services are taken into consideration when Bulk Email Checker performs its verification. The service can also integrate with Google Sheets and is offered as a WordPress plug-in.
Bulk Email Checker’s service features and benefits include:
Bulk Email Checker’s verification test first checks to see if addresses are in RFC-compliant format. Next, they are filtered against a continuously updated list of known disposable email providers and your account’s blacklisted addresses. Any previously failed addresses are removed for free. The service also checks for invalid DNS entries and filters for catch-all role accounts like “info@.” Finally, the system conducts a SMTP test to ensure a mailbox exists.
Bulk Email Checker’s verification process can take several hours instead of the minutes NeverBounce users might anticipate for a similar service. However, Bulk Email Checker’s API can be integrated into your website, and it provides email verification processing in real-time. This tool can also help alert users that they have inadvertently entered an email address incorrectly in contact forms before ever submitting the form to you.
Bulk Email Checker advertises a 97 percent deliverability guarantee. Once a list has been uploaded, users can access a visual dashboard either on the website or on a mobile device, which provides an estimated time for verifications to be completed as well as progress meters. These progress meters show the breakdown of how many email addresses have passed, failed, are still in process, and have been returned as unknown.
Bulk Email Checker protects your data with 256-bit, 2-way encryption. Not even their staff can see your information, and it is GDPR-compliant. All imported records are stored in an independent container that only you can access, and all data is deleted 90 days after the exported date.
What Bulk Email Checker Is Missing
Bulk Email Checker offers many of the same features as NeverBounce at a lower cost and can work with mobile devices, but it is significantly slower. It also does not work with social media to fill in missing fields like ZeroBounce does. Its guaranteed delivery rate is also one of the lowest of all the tools we compared, but at 97 percent, it is still a good option for business that don’t mind the extra processing time.
What Users Think About Bulk Email Checker
Users of Bulk Email Checker like its integrations with other email marketing service and appreciate the low price point. They also give it above average ratings for speed and usability as well as customer support.
Best Email Verification Service with a Subscription: Verifalia
Verifalia is an email cleaning service that tests emails against twenty different types of checks, and its accuracy level depends on the quality level you choose. In addition to format checks, Verifalia also identifies potential spam traps, role accounts, catch-all servers, and disposable email addresses. Verifalia’s subscription model add credits to your account each month, making it a good choice for businesses utilizing continuous address verifications.
Verifalia’s monthly subscription ranges from $9 to $499 per month, which includes daily credits between two and 200 that can be redeemed for one of three email validation services, based on quality. Additional credit packs begin at $4 for four credits (500 standard quality validations) to $4,899 for 80,000 credits (10,000,000 validations).
Credits can be used toward email validation checks based on the following quality levels:
- Standard Quality – Standard quality costs 0.008 credits per email address and includes a single validation pass using all Verifalia’s quality checkpoints as well as a 5-second anti-tarpit/graylisting test time.
- High Quality – High quality costs 0.02 credits per email address and includes three validation passes using all of Verifalia’s quality checkpoints as well as a 50-second anti-tarpit/graylisting test time.
- Extreme Quality – Extreme quality costs 0.04 credits per email address and includes nine validation passes using all of Verifalia’s quality checkpoints as well as a 5-minute anti-tarpit/graylisting test time.
Verifalia’s Tiered Subscription Plans
|Number of free validations per day|
|Number of free credits per day|
Verifalia’s key feature is its RESTful API, which retries an email multiple times at specific intervals in order to avoid graylisting. This allows the service to detect mailboxes that have been made temporarily unavailable as part of a mail server’s spam protection. As a result, its results can be slower than those of other services we reviewed.
The following are key features of Verifalia:
Regardless of the plan you choose, each validation pass includes 20 tests to verify that an email address is valid and monitored. It can even validate Yahoo! Mailboxes. Some checks may be repeated to eliminate false positives depending on the quality of verification requested.
The verification checks Verifalia includes are:
- Address Syntax Checks
- Domain Checks
- Disposable Email Checks
- Mail Exchange Checks
- Catch-all Address Checks
- SMTP Checks
- Temporarily Unavailable Checks
- Honey Pot Detection
- International Verification
- Role Account Detection
- Duplicate Address Detection
- Firewall Protection
Verifalia does not make a general guarantee regarding processing times. It does state, however, that the standard level of verification is usually complete within an hour for a list of up to 10,000 records. A list of one million records might take up to twelve hours. Processing times for High and Extreme level services are expected to take significantly longer.
Your list cleaning results can be easily downloaded from the client area in a .CSV file or Excel spreadsheet. All data is returned to you in the same order in which it was uploaded, along with a status code indicating the result of the verification for each address.
Data is protected in a secure HTTPS/SSL environment. Verifalia never sells, rents or shares any of your data with third parties. In addition, all data is automatically deleted 30 days after your job is completed, and you can delete it manually sooner than that using their client dashboard.
What Verifalia Is Missing
While it does have a web-based API, the tool is not advertised as being able to integrate with third-party email messaging tools like MailChimp. Verifalia also lacks the list archiving feature offered by other competitive products like NeverBounce and the social append feature of ZeroBounce.
What Users Think About Verifalia
Users give it above average ratings on usability, features, and pricing, and call it a robust service for small to mid-size businesses, freelancers, and non-profits. They are less enthusiastic about its support and speed.
Benefits of Email Checkers and Verifiers
People change their email address every day. An email address they provided you a year ago when they first opted into your service may not be actively monitored today. Email checkers and verification services can help ensure that your list contains only the best data.
“The end result is a more streamlined list of real addresses, hopefully resulting in eyes on my emails. If you’re trying to get people to buy into your products, services or brand, you only want valid addresses. You’ll also save money, as many mailing services charge based on how many names are in the list you’re sending to.”
– Jonathan Jenkins, Founder, Lofty Rankings
Email checkers can also help verify that an address being entered in a web form is valid before a person hits the submit button. Everyone is guilty of making the occasional typo, especially when filling in form data. Grammarly is an extension you can install into most browsers that works in the background to help catch other pesky errors in real-time. Best of all, it is free to use and can work with desktop apps like Word and Excel too.
We believe the best email tracker programs are the ones that not only review your email lists in terms of format, domain, and SMTP checks, but also are willing to guarantee their accuracy. The best services for small business also include fast turnaround times with budget-sensitive pricing. For this reason, we have determined NeverBounce to be the best overall email checker service. However, if you’re looking to find emails as well as check them, you might want another option.
Toofr is an email finder that helps you prospect by helping you identify a prospect’s email address without requiring you to leave a web page and can verify the individual address in real-time for as little as $9 per month. Check them out today for more information: