I wasn't sure about an email checker at first, but this tool really works. My email deliver ability has gone up since using it, and it's easy to use. I can trust my email lists now, which makes my mar... See more
Company replied
Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews.
Review summary
Based on reviews, created with AI
Based on these reviews
Verified
I love how simple the interface is and the accuracy is spot on. I waste now no more time @invalid emails. My email marketing has been now more effective since i use them.
Company replied
Honestly, this tool is great. It verified all my emails in seconds and the results are clear. I've seen fewer bounces and better responses. It's one of the most reliable email checkers I've used.
Company replied
Verified
I've used other email checkers, but none were as quick and accurate as this one. My email campaigns are way more successful now.
Company replied
Love this email verification tool! It's made email checking so much easier. The results are fast, and it gives me confidence that my emails won't bounce.
Company replied
It's simple to use, and it made organizing my contacts easier while boosting how well my emails reach people. Plus, it's been a real time-saver.
Company replied
Verified
I really appreciate how straightforward this tool is. It’s not overloaded with unnecessary features, just does its job well. I’ve been using it for months and haven’t run into any issues. Great for bu... See more
Company replied
Verified
This email checker is pretty solid. I use it to verify email addresses before reaching out to leadsand it helps improve my email deliver ability. It’s fast and gives me peace of mind knowing that I’m... See more
Company replied
Verified
I was really impressed with how quickly Mailtester processed my list. I’ve tried other email checkers before, but this one seemed more thorough, especially when it comes to checking for catch-all adre... See more
Company replied
Honestly, I was skeptical about email verification tools at first. But after using this one, I can confidently say it's worth every penny. The service is fast, and I've seen a significant boost in my... See more
Company replied
Verified
This is exactly what I needed for my email campaigns. It cleans up my lists and helps me avoid unnecessary bounce rates. The interface is easy to use and I feel more confident sending out my emails no... See more
Company replied
Redirected
By far the best value for money mailtesting tool that I have used. Perhaps slightly slower then premium rate tools, but the result is ultimately top quality. Would highly recommend, feel very fo... See more
Company replied
Verified
Honestly, this is one of the best email verification tools I’ve used. It doesn’t over promise and delivers exactly what it says. If you’re serious about keeping your email list clean, this is the way... See more
Company replied
Verified
We used to struggle with high bounce rates, but now our lists are clean and efficient. The real time verification feature is awesome. This tool has definitely boosted our email marketing success.
Company replied
Verified
I’ve been using Mailtester for a couple of weeks and it’s made a huge difference in the quality of my email lists. I’m not getting flagged for sending to invalid addresses anymore, which is a huge plu... See more
Company replied
I've been using this service for a few weeks now, and I must say it's a solid tool. It helps me find valid emails, making my campaigns far more effective.
Company replied
Verified
MailTester has really boosted our email marketing efforts. We now have accurate, clean lists, reducing bounce rates. The email finder feature is a game-changer for new leads.
Company replied
Verified
I use a few email verification tools, but this one has quickly become my favorite. The interface is clean and I like how it catches things catch-all addresses that other tools miss.
Company replied
Verified
As a small business owner, I can’t afford to have my emails flagged as spam. This tool has helped me maintain a strong sender reputation and improved my deliver ability rates.
Company replied
Verified
I didn’t realize how much an email verifier could improve our process, but this tool has made a huge difference. Our bounce rates are lower, and our open rates are higher.
Company replied
Verified
We’ve been using MailTester for a whle now, and it’s made a huge difference in our email marketing. The email checker is reliable, and the email finder helps us grow our contact list.
Company replied
Hello MailTester.Ninja good working tool but need to improve it's quality some time it's testing time repeat & repeat some time it's stop working or some time all ok and super fast working.
Company replied
Verified
I love how easy this tool is to integrate with my workflow. It’s saved me from sending emails to invalid addresses, which I didn’t even realize were on my list. It’s a must-have for any email marketer... See more
Company replied
Verified
A great tool for email marketing. I’ve been using it to verify my leads before reaching out and it’s saved me so much time. No more wasting resources on invalid emails.
Company replied
Verified
I was having issues with deliver ability before, but after using Mailtester, I’ve seen a noticeable improvement. It’s super quick and the email finder feature has helped me build a much more targeted... See more
Company replied
Verified
I love how easy it is to clean up my email lists with this tool. Invalid addresses are no longer an issue, which keeps my campaigns running efficiently.
Company replied
It's rare to find a tool that does exactly what it promises, but this service really delivers. I checked over 50k emails this month without any issues.
Company replied
Verified
If you need a reliable email verification tool, look no further than MailTester. It’s helped us maintain a high-quality email list and improve our campaign results.
Company replied
Verified
With MailTester, email verification is a breeze. We've reduced our bounce rates and improved our sender reputation. This tool is essential for any marketing strategy.
Company replied
Verified
A friend recommended this service, and I’m impressed. My email lists are cleaner, and I’ve notices more opens and fewer bounces.
Company replied
MailTester Ninja helped me clean up years of accumulated contacts. It caught a few invalid addresses I wouldn't have noticed otherwise. My bounce rate has dropped significantly.
Company replied
Verified
Managing my email campaigns has become so much easier with this tool. The real-time email verification feature ensures I avoid bounce rates and maintain a strong sender reputation.
Company replied
Verified
Maintaining data hygiene in my contact lists has never been simpler. Cleaning up duplicates and invalid emails is a breeze with this tool.
Company replied
Verified
The email checker is exactly what my team needed. The user-friendly interface and quick email verification have made our outreach campaigns much smoother.
Company replied
I love how easy it is to verify emails with this tool. It's straightforward and effective. My inbox is cleaner and my campaigns are more successful!
Company replied
This email verification tool is fantastic! It's incredibly easy to use and has helped me clean up my email list efficiently.
Company replied
Verified
We've seen a significant drop in bounce rates and an increase in engagement since using this email checker. Fantastic tool!
Company replied
Verified
Using this tool has been a great experience. It’s accurate, fast, and user-friendly, making it an invaluable asset for my email campaigns.
Company replied
The best email checker I've used! It quickly finds and verifies addresses, reducing my bounce rates significantly.
Company replied
Verified
As a small business owner, I appreciate how easy MailTester is to use. The email finder tool helped us expand our customer base with minimal effort.
Company replied
Verified
MailTester is indispensable for our marketing team. The email chekcer helps us maintain clean email lists, reducing bounce rates and keeping our campaigns efficient. Excellent tool!
Company replied
Verified
MailTester is simply the best for email verification. It’s quick, accurate, and easy to use. We’ve seen a noticeable improvement in our email deliverability rates.
Company replied
Verified
Has transformed my email marketing efforts. It’s a powerful, reliable tool that ensures my emails reach the right recipients.
Company replied
Company details
Written by the company
MailTester.Ninja is a free and easy-to-use email checker that verifies or finds any address. A leading platform in the realm of email verification and discovery. As an advanced mail tester, we offer comprehensive solutions to ensure the accuracy and deliverability of your emails. Our email checker functionality is designed to validate your recipients in real-time, reducing bounce rates and increasing the efficiency of your marketing campaigns. By verifying each recipient address, MailTester.Ninja helps maintain the integrity of your sender reputation, preventing your emails from being flagged as spam. Moreover, as an effective email finder, MailTester.Ninja aids in expanding your outreach. Discover new potential contacts and leads with our sophisticated search tools, designed to explore and identify valid contacts that align with your business needs. At MailTester.Ninja, we are committed to enhancing your communication strategies. Whether you are looking to clean up your existing mailing list, prevent fraud, or comply with GDPR, our tools are tailored to meet your requirements. Embrace the power of a reliable mail tester, email checker, and email finder with MailTester.Ninja unlimited and take your e-marketing campaigns to the next level.
Contact info
7 Branch Place, N1 5PH, London, United Kingdom
- contact@mailtester.ninja
- mailtester.ninja
4.8
Excellent
118 reviews
Verified
Reply from MailTester.Ninja
Hey Craig ☺️
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Advertisement
Verified
I can't believe how easy it is to find…
I can't believe how easy it is to find and verify emails with this tool.
April 27, 2025
Reply from MailTester.Ninja
Good afternoon Lauren 😄
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Verified
productive working
I love how simple the interface is and the accuracy is spot on. I waste now no more time @invalid emails. My email marketing has been now more effective since i use them.
April 17, 2025
Reply from MailTester.Ninja
Hello Caroyln 🙂
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Tried a few email checkers before
Tried a few email checkers before, but none were as easy to use as this one. It cleaned up my email list quickly and got rid of duplicates.
April 25, 2025
Unprompted review
Reply from MailTester.Ninja
Hello 😇
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Honestly
Honestly, this tool is great. It verified all my emails in seconds and the results are clear. I've seen fewer bounces and better responses. It's one of the most reliable email checkers I've used.
April 21, 2025
Unprompted review
Reply from MailTester.Ninja
Hey Derek 😇
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Advertisement
Verified
Good Checker
I've used other email checkers, but none were as quick and accurate as this one. My email campaigns are way more successful now.
April 20, 2025
Reply from MailTester.Ninja
Morning Marie 😇
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
It's simple to use
It's simple to use, and it made organizing my contacts easier while boosting how well my emails reach people. Plus, it's been a real time-saver.
April 24, 2025
Unprompted review
Reply from MailTester.Ninja
Hey Carl 😊
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
I wasn't sure about an email checker at…
I wasn't sure about an email checker at first, but this tool really works. My email deliver ability has gone up since using it, and it's easy to use. I can trust my email lists now, which makes my marketing more efficient.
April 22, 2025
Unprompted review
Reply from MailTester.Ninja
Good morning 😊
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Love this email verification tool
Love this email verification tool! It's made email checking so much easier. The results are fast, and it gives me confidence that my emails won't bounce.
April 21, 2025
Unprompted review
Reply from MailTester.Ninja
Hey Sam 😊
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Advertisement
Verified
I’ve seen a 30% increase in my open…
I’ve seen a 30% increase in my open rate since I started using it. I trust the service, and it’s easy to use.
March 7, 2025
Reply from MailTester.Ninja
Hey Verionca 😊
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Verified
A friend recommended this service
A friend recommended this service, and I’m impressed. My email lists are cleaner, and I’ve notices more opens and fewer bounces.
March 6, 2025
Reply from MailTester.Ninja
Good morning Stanley 😇
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Verified
Reply from MailTester.Ninja
Hello Deborah 😌
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Verified
Reply from MailTester.Ninja
Hey Jan 😊
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Advertisement
Honestly
Honestly, I was skeptical about email verification tools at first. But after using this one, I can confidently say it's worth every penny. The service is fast, and I've seen a significant boost in my open rates.
March 3, 2025
Unprompted review
Reply from MailTester.Ninja
Good morning Steven 😊
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Verified
The service has been incredibly helpful…
The service has been incredibly helpful in ensuring my email lists are accurate.
March 3, 2025
Reply from MailTester.Ninja
Hi Lynn 😌
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
It's rare to find a tool that does…
It's rare to find a tool that does exactly what it promises, but this service really delivers. I checked over 50k emails this month without any issues.
February 27, 2025
Unprompted review
Reply from MailTester.Ninja
Hello Benno 😊
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
I've been using this service for a few…
I've been using this service for a few weeks now, and I must say it's a solid tool. It helps me find valid emails, making my campaigns far more effective.
March 1, 2025
Unprompted review
Reply from MailTester.Ninja
Hello☺️
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Advertisement
I no longer worry about sending to…
I no longer worry about sending to invalid addressed and damaging my sender reputation. The verification is incredibly accurate.
February 26, 2025
Unprompted review
Reply from MailTester.Ninja
Good morning Jeffrey !
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Redirected
By far the best value for money…
By far the best value for money mailtesting tool that I have used.
Perhaps slightly slower then premium rate tools, but the result is ultimately top quality.
Would highly recommend, feel very fortunate to have stumbled across them.
January 21, 2025
Unprompted review
Reply from MailTester.Ninja
Hi Josh 😇☺️
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
Verified
Honestly
Honestly, this is one of the best email verification tools I’ve used. It doesn’t over promise and delivers exactly what it says. If you’re serious about keeping your email list clean, this is the way to go. I’ve seen a boost in deliver ability since using it.
January 17, 2025
Reply from MailTester.Ninja
Good morning Leonard 😊
Thank you very much for taking the time to share your experience with MailTester.Ninja
We sincerely appreciate your feedback and support. Our team is constantly working to improve our services, and your input is extremely valuable to us.
If you have any additional suggestions or concerns, please don't hesitate to contact us directly at support@mailtester.ninja.
We are always here to help and strive to provide the best possible experience for our users.
Once again, thank you for your feedback and for trusting MailTester.Ninja
Best regards,
The MailTester Ninja Team♥️
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.
Learn more about other kinds of reviews.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.