Improve your Deliverability with

email assurance

Fast Email List Cleaning and Email Validation

Whether you are experiencing high bounces or want to take a proactive approach to your email list maintenance, we have a solution that is right for you. Our service analyzes the deliverability of your email lists, and will get you back in compliance with MailUp's standards.

Free Report and Monitoring

When you link a MailUp account, your lists are analyzed for deliverability and given a list quality score and Email Assurance report. Watch the health of your list over time with the daily progress updates.

One-time Tuneup

If you need a one-time email list cleaning, our service is comprehensive and fast. Results are synced back to your MailUp list, and undeliverable emails are removed. You receive a downloadable analysis.

Email Assurance

Protect your MailUp lists and never pay for email validation again with this monthly subscription! Assured lists are scanned daily and synced back to MailUp, with a daily downloadable report.


Use the slider or input your email list size to calculate the cost to clean your email list.

Fast and comprehensive email address validation. There are no setup fees, no contracts, and no credit card required to get started. For lists over 3M, talk to us!

Free Reporting


Free email list quality reports

Get Free List Quality Reporting for any list uploaded or synced to our application. Free Reporting includes List Quality Scoring and Deliverability Code Breakdowns for each list.

One-time Tuneup

  Calculate Above

One-time, comprehensive email verification

A One-time Tuneup provides you with a one-time, comprehensive list verification. Pricing is based on the number of addresses in your email list.

Pre-Paid Tokens

Talk to us

Flexible, pre-paid token packages

Token Packages make it easy to buy verification in bulk, and can be used to verify numerous email lists.
Pricing is discounted based on volume and tokens do not expire!

*limited time special pricing

Sign up for free

Have a high volume email list or ongoing email verification needs?

Talk to us! We will make sure you get the best deal.

Sign up with your MailUp account


How do I clean my MailUp email lists?
Signup for our service by linking your MailUp account. Your lists will automatically be imported and analyzed for deliverability. Once they are complete, you can view your free report and purchase your cleaned list. The results are synced back to your MailUp account at purchase, and the undeliverable emails are removed.
How does your service compare to your competitors?
We are faster, more accurate, and our pricing is some of the most competitive in the marketplace. With every list, you receive a free report on the quality of your email list before purchasing. Our validation process is comprehensive and we analyze hundreds of millions of emails daily.
What is the difference between a One-time Tuneup and Email Assurance?
Email Assurance is a monthly subscription that automates your email list maintenance. Assured lists are scanned daily, new subscribers are analyzed, and results are synced back to MailUp. You are always ready to deploy mail with Email Assurance.
How do I get free monitoring for the lists in my MailUp account?
Simply link your MailUp account, and watch your deliverability over time. Linked lists are analyzed daily for new subscribers and you can view your list quality trending over time on the Progress Report. Free monitoring doesn't include the daily syncing of grades.
Sign up with your MailUp account

Recent Blog Posts

Visit our blog  

What People Are Saying

In less than two weeks we went from an 87% reputation to 98% with SendGrid. We have pleased the ISP gods thanks to your team!
— Mikhail Avady, IP SmartUP
I was a bit desperate yesterday after MailChimp blocked one of my uploaded lists. It is clear that DataValidation solved this very quickly. Thanks a lot!
— Yves Van Hee, Atradius
DataValidation saved my life! I had to migrate the newsletter campaigns from a self-programmed system to Zoho Campaigns, and I recognized, too late, that the dataset was horrible. Zoho blocked me during the first campaign.
— Hans-Henning Schulz, Deutscher Verlag für Gesundh
I LOVE your service. I’ve used the MailChimp integration, which works like a dream. I will be recommending your service to all my MailChimp clients as a “good practice” tool to add to their arsenal.
— Bridget Gilchrist, Tin Soldier Ltd.
Thanks very much for cleaning my list, the service works very well.
— Ross Debos, Sunday SouLounge
Super. I didn't expect the Mailchimp integration. It made everything painless.
— Philip Owen,
The service I have received has been fantastic. Without any doubt the best online service I have ever had. Thank you!
— Andrés Gómez-Peña, IDB
On our first eNews to nearly 2,500 subscribers, we had only 5 bounce-backs and 7 unsubscribes. No way that would have been possible without your service! Thanks, DataValidation, for keeping us in compliance!
— Jodie Rogers, University of Oregon
You guys are awesome. I've been looking for a platform like this for 2 months to vet media contacts for my startup so I don't trash our domain in spam traps. This was the most effective tool I've found, and I'll be using it again on the consumer side as we develop a direct email marketing campaign.
— Jared Criscuolo,
Y’all have a great service with a nice clean, user friendly interface. Glad to be able to have multiple versions of our list to make use of. No doubt I’ll be using the services of your company again in the near future.
— Cody Reid, Brunk Auctions
I'm very pleased with how fast I got a reply to my questions. Also very satified with the price and service. Great job.
— Joshua Guilfoyle, New York City, NY
Very useful — helped us get over the hump with our first import of 6-year old data to MailChimp. Now running much more smoothly!
— Alex English, Tampa Bay Regional Transportation Authority (TBARTA)
Thanks Data Validation! It was easy to use and after I studied the definitions, I was able to re-sort my data for upload to MailChimp. In addition, your tips about sending emails to the Accepts All emails was extremely helpful!
— Jennifer Hoskins, PHR
It's awesome!! I was able to import the cleaned list of A's and B's into MailChimp no problem, whereas before cleaning with DV, MailChimp let me know a re-opt in would be required. I'm thrilled with this service!
— Lily Starling,
We tried DataValidation on advice from a colleague. The service was easy to link to Mailchimp, and was extremely affordable.
— Jodie Rogers, University of Oregon
We are VERY satisfied. Your service has refreshed our stale mailing list and contributed to the surrealistic celebration of the Domestic Research Society's 10th anniversary - high in the Julian Alps!
— Alenka Pirman, Domestic Research Team
Your service has been outstanding, and I especially liked your LiveChat feature - very helpful!
— Karen Burke, Crop King
We saved thousands of dollars that would have been spent on bounces and opt-outs by using DataValidation's cleaning tools. Now, we use their real-time protection so we never have a bad list again.
— Blake, Perdue for Senate
Thank you very much! Your service is super!
— Lexi Serebro,
Thanks for your service, it was helpful and easy to use! MailChimp knew what they were doing when they recommended you.
— Abby Rubottom,
We are very pleased with your service and fast turnaround time. We ran a small list through and then sampled those emails through our email platform.
— James J. Marks, Background Info USA