Online Email Verification Service
HuBuCo is now part of MillionVerifier

Log in to your existing HuBuCo account
or create a new one on MillionVerifier

HuBuCo is closing for new registrations

We recommend MillionVerifier
Highest Accuracy & Lowest Prices

We have launched MillionVerifier in May 2019 to offer a better service for those who have high email verification needs. MillionVerifier is going to give our customers a better email verification experience with an improved email verification accuracy.

  • Existing HuBuCo customers can continue using HuBuCo
  • New customers to register on MillionVerifier


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Read What Our Customers Have Said About Us

HuBuCo is rated 4.8 out of 5.0 based on 232 reviews...

I love how easy it is to use this service

"HuBuCo saved our project - I needed to send out an email to over 7000 email address from a database that was over 3 years old (and has been sitting in the archive all that time) and to avoid any spamming issues, we need to clean this list ASAP"

Kirsten W.

Junior Project Manager

Great service and tremendous value

"I sent out a newsletter to the freshly HuBuCo-verified emails with almost zero bounces. With a clean list, our reputation score quickly increased, and after a few mailings was up to 99/100."

Kevin A.


HuBuCo keeps my email providers happy

"The software is inexpensive and very easy to use, very quick. The online support is super intuitive and the dashboard is pretty easy to navigate once you get used to it."

Lisa B.

Marketing Manager

Great Tool For Keeping Bounces Down

"help reduce bounces and keep our sending reputation high, we use HuBuCo's API to validate email addresses"

No training required. Easy interface

"These guys support a simple, no brainer api that just works. No need for composer, or other plugins to run. Overall experience is positive. Bought more credits the other day!"

Anthony A.

Business Owner

Get the dirt off that list

"I found HuBuCo to be good, simple, got the job done. And the pricing was competitive, which is always nice."

It is easy, accurate and saves you money

"It works plain and simple. You upload a list, it runs, and you get back accurate results. No more sending email to dead accounts, catch alls and spammers."

Michael L.

Executive Leadership Coach

Only tool worth your time

"We tried other tools but found Hubuco to be the most effective for bulk verifications. Wish the user interface updated a little more regularly with bulk uploads"

Dave O.

Business Owner

Checking 50 thousand contacts in a couple of hours

"That it wouldn't be limited to the amount of mails and would always be precise with them. Allowed me to do a profound clean up."

The only verifier that does what it says on the website

"HuBuCo had literally removed all our bounces. Software work super fast and support was awesome."

Mike A.


best email verifier API

"What i like about Hubuco is that credits are not limited per day and I can use as many credits I need in any given day. Also - they refund any credits for unknown results"

Grigore O.

Software Engineer

Best out there

"I research about 40 email verifiers, tested 20, and narrowed it down to HuBuCo. They are on top of the price game while still being easy to work with and accommodating."

Emma P.


Bulk email verification made easier

"Pretty easy to use service that I wasn't able to find other places"

Jon P.


Brilliant for validating emails in large lists

"If you're operating in a high turnover industry, maintaining valid contact details for your marketing database can be difficult, HuBuCo makes this much easier in my case where I can validate my contacts routinely to protect the reputation of my sending ip."

James B.

Managing Director

Hubuco Was great!

"It allowed us to verify emails for our campaigns and worked really well. Highly recommend his step to anybody running cold email campaigns."

HuBuCo is the best email verifier

"Its easy to use, relatively quick, and gives you clear and explicit access to your data."

Daniel B.

Marketing and Project Manager

Best Email cleaning service

"1. Easy to use 2. Pricing is very good 3. Quality of cleaning is too good. It's a very good list cleaning service and I use it regularly."

Anirudh K.

HSE Consultant

Does email verification well!

"We saw the bounce rate on our email list drop substantially. The OK and Catch All options are a nice touch. We got sold a less than adequate list that we were able to salvage.Also, you only pay for what you need."

Hubuco Email Verification- Very easy to use

"Hubuco was easy to use and very accurate. We are able to clean up massive trade show lists quickly and send out emails that wont bounce and cause our emails to look like spam."

Angela B.

Graphic Web Designer

The best email address scrubbing

"Quick and easy to load and scrub email addresses. I have not ever had any challenges with their product"

Robert B.

Founder and CMO

Easy process to verify email addresses!

"The process is easy to verify email addresses and helps keep my spam score to a minimum while targeting and reaching inboxes!"

Justin E.


Happy to be verified

"Ease of use and ease of purchasing more credits"

Easy, fast and reliable email verification service

"All the process was simple and easy to use. The company seems trustworthy (which is an important point in that industry). Pricing was good and fair and well worth"

Easy to use service with effective results.

"Easy to use and cost to effective method of verification."

Shivam A.

Business Development Manager

Most Impressive Email Verification Service

"Hubuco is cost effective and very easy to use email verification service It verifies emails very accurately and overall user experience is excellent."

Sameer D.


Can't beat the price

"We used the API to get verification results in real time and it worked great. Not a lot of coding experience required."

Kelly H.

Business Manager

Great for bulk verifications

"Love that you can upload a large CSV and let it do its thing. Certainly helped our hard bounce rate go down"

Alli S.


They offer the BEST verification service EVER

"I used HuBuCo to verify my emails for my potential clients. Never had any problems as the service worked well. I continue to use HuBuCo as one of my main email verification service."

Ashley N.

Business Owner

Excellent service - quick, good value and responsive

"It was easy to use and get you the results back quickly. This is fab. Someone recommended it to me, and it's just great."

Simon M.

eMail Marketing Headache Solver

Overall nice product

"Ease of use... user friendly..does what it intends to do"

Siddharth V.

Tech consultant

Quick and Easy

"It delivered and made me confident that I wouldn't upset the email police. everything worked flawlessly and support was always asking how they could help..."

Gerrad J.

Director of Sales at EGNYT

After having tried many others HuBuCo my best option

"he interface is clean and easy to understand. Verification process is fast and results are divided in segments according to the deliverability grade. Customer service reply very fast and helpful"

Emily W.

export manager

Best solution for email verification with 100% accuracy

"its simple, reliable, quick response, perfect and accurate results 0% bounce back. best software with 100% accuracy"

Dr Pramod s.

Professor and Head

Great Product Fast Result

"Super Easy Interface, fastest and reliable email verification service"

Javed K.


Best Email Verification Service

"Best email verification service that you can find on the web. Email verification via HuBuCo provides true reliable results. This is a serious company that you can trust."

Invent Property

Best Email Verifier API

"Best email verifier API i have used so far. Bulk file verification makes it very quick and easy to use - no coding skills required."

Greg Oboroceanu


"Out of 10,000+ emails only one bounced. Couldn't ask for more. The pricing is very reasonable too.  Thanks Hubuco!"


Immediate Results

"Results are transparent and well-explained, they tell you what they can do and what they can't. My email outreach campaign's delivery rate improved after a week."


HuBuCo is all you need for your clean emailing lists.

"HuBuCo is all you need for a clean email delivering list. Our mailing delivery has shot up a great deal since we started using their services over a year now. No more bounce backs or complaints. I’d recommend HuBuCo any day and any time. Very affordable also. No dramas. Thanks HuBuCo!"

More Plus International LLC

99.9% delivery rate

"Their email verification tool is just incredible."


Overall a great service...

"There has been a few performance issues even on small batches, which affect us more than anything else however it seems these have been ironed out with the new server. its hard to find a validator that has servers in Europe to conform with DPA rules in the UK/EU."

Daniel Hardaker