Amazing price and result quality for an email verifier. I have been using it for months though their API. It was very easy to integrate with n8n thanks to their online customer video tutorial. 💪🏻
Company replied
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See what reviewers are saying
I purchased the most expensive package from Ninja Mail Tester, expecting reliable service, but it has been an absolute disaster. The servers seem to be constantly down, and despite waiting almost th... See more
Company replied
I did not expected that app can save me so many working hours with such a decent subscription charge!
Company replied
We discovered an amazing tool to avoid bounces. Fast and reliable. A game changer. Paying 16.99 only to verify millions email per month is exactly what we were looking for. On top of that bounce level... See more
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
4.5
Excellent
132 reviews
Replied to 100% of negative reviews
Typically replies within 2 weeks
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
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.
21 April 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♥️
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.
7 March 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♥️
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.
6 March 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♥️
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♥️
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♥️
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.
3 March 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♥️
The service has been incredibly helpful…
The service has been incredibly helpful in ensuring my email lists are accurate.
3 March 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.
27 February 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.
1 March 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♥️
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.
26 February 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♥️
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.
21 January 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♥️
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.
17 January 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♥️
I love how easy this tool is to…
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.
16 January 2025
Reply from MailTester.Ninja
Hey Florence 😊
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 Mailtester for a couple…
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 plus. Very happy with the results so far.
16 January 2025
Reply from MailTester.Ninja
Hey Robin 😌
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♥️
This email checker is pretty solid
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 not wasting my marketing budget on invalid emails.
14 January 2025
Reply from MailTester.Ninja
Hello Russel 😊😌
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 was really impressed with how quickly…
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 adresses. Wort every penny.
13 January 2025
Reply from MailTester.Ninja
Hey Jade 😇
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 really appreciate how straightforward…
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 businesses needing to verify emails fast.
12 January 2025
Reply from MailTester.Ninja
Good morning Beryl 😊
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♥️
This is exactly what I needed for my…
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 now. Highly recommended if you’re looking to get better results.
11 January 2025
Reply from MailTester.Ninja
Hello Robin 😊
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 was having issues with deliver…
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 list.
10 January 2025
Reply from MailTester.Ninja
Morning and happy new year 🎊
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♥️
A great tool for email marketing
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.
9 January 2025
Reply from MailTester.Ninja
Hi Arthur and happy new year 🎊
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♥️
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