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Verify Your Email List to Improve Deliverability

Reduce bounces and improve your list quality with DataValidation's email list maintenance integration. Whether you are looking for a one-time email verification cleanup or want a solution that can grow with your list, our email list integration will keep you in compliance with MailChimp's standards.

Free List Health Report

Simply use your MailChimp account credentials to signup and receive free list quality reports. Each email list is given an overall deliverability rating based on the health of the subscribers on the list. This information can be used to determine if a One-time Tuneup is necessary.

One-time Tuneup

A One-time Tuneup cleans your email list and gives you access to address-by-address deliverability data. After purchasing, you receive a downloadable analysis, and results are synced back to your lists inside of MailChimp with undeliverable emails unsubscribed. Cleaning your MailChimp email list can help improve your email marketing reputation.

Monthly Email Assurance

Email Assurance scans your email lists daily for undeliverable emails, and automatically unsubscribes bad addresses before they bounce and hurt your deliverability. Maintain your growing email list worry-free with an Email Assurance subscription. Every One-time Tuneup includes 30 days free of Email Assurance.


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

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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

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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

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

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How do I clean my MailChimp email lists?
The fastest way to clean your mailing list is to signup using your MailChimp credentials. Your email lists will be imported, and your subscribers will be analyzed for deliverability. A list quality score indicates the overall health of your contact list. To see the individual contact deliverability data, you'll want to purchase a One-time Tuneup. After purchase, you receive a downloadable address-by-address analysis, your lists are updated inside of MailChimp, and undeliverable email addresses are unsubscribed.
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How does your list cleaning service compare to your competitors?
We are faster, friendlier, more accurate, and our pricing is competitive. With DataValidation, you always know the quality of your email list before purchasing. We analyze hundreds of millions of emails daily, and our comprehensive validation process goes beyond basic SMTP and verification checks, also referencing historical bounce, click, open, and opt-out data. It's easy to signup and our MailChimp integration makes list cleaning and maintaining a healthy email list a breeze.
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Should I buy a One-time Tuneup or Email Assurance for my email list?
It depends on your needs as an email marketer. A One-time Tuneup cleans up your email list one time.  Email Assurance scans your email list daily  and automatically removes undeliverable contacts before they bounce. If you have a high growth email list, Email Assurance is ideal and helps alleviate some of the complexity of managing deliverability. Every One-time Tuneup includes 30 days free of Email Assurance.
Learn more about Email Assurance >>
How do I get free health quality alerts for the lists in my MailChimp account?
Simply link your MailChimp account and watch your email list 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.
Learn more about free monitoring >>
Sign up with your MailChimp account

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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