Hello! My name is Norbert!

I can verify your email lists

Only $.003/email up to 500k and $.001/email above that. $2 min.

How many emails to verify?
I will only ask you:

They trust me with email verification

Facebook, AirBNB, Google Ventures, Intel, Twitter, Oracle, Snapchat

Norbert wants your email to reach real people.

...and doesn’t want to see you get blacklisted.

When emails are sent to invalid email addresses, they bounce. The more you bounce, the lower your sender score will drop. You'll be trapped by spam filters and eventually blacklisted. Norbert makes sure every email you send, reaches a real person. This will increase your deliverability, open rate and revenue.







Thousands of people trust Norbert to keep them out of spam's way

We’ve been using VoilaNorbert for a while now at Salesflare and I’m impressed with both the usability of the product and quality of the leads. If you want to easily find and verify email addresses or get your data enriched, this is the right tool.
Jeroen Corthout
Jeroen Corthout
Co-Founder & CEO of Salesflare
This is a must-have tool for anyone that's looking to do email outreach and campaigns that involve personalization, customization or segmentation. Big fan!
Jim Hiffman
Jim Huffman
Co-Founder & CEO of GrowthHit
The best thing about Norbert is how accurate it is. Return rates are well above what I was used to from other tools and the emails don’t bounce either. I imagine this is due to the fact that they also have a strong email verification engine running in the back which is also available as a separate service.
Jelle van de Vliet
Jelle Van De Vliet
Growth Hacker at The Growth Revolution
I use the Norbert Chrome Extension for finding email addresses when doing link building. Being able to do it all within Chrome without leaving the site is super helpful. It's one of the quickest and one of the most accurate at uncovering email addresses.
Vincent Nero
Vincent Nero
Content Marketer at Siege Media
Accuracy and precision: I trust Norbert 100%. I have been doing cold mail outreaching for my company's in-house products for a while now. Norbert always helps me out when I'm blocked and eases my work effectively than any other apps I have ever used.
Aksa Victoria
Aksa Victoria
Growth Hacker & Content Marketer at Sygul Technologies
Voila Norbert is great for getting the email addresses you need. It’s also easy to use: you just type in the name, last name, domain and get the email address in return. We’re using it for lead generation, retrieving contact information of marketing leaders, as well as advertising decision makers.
Lara Zakarian
Lara Zakarian
Sales & Partnerships Manager at SitePoint and SnapMunk
With Enrich, Norbert has become the default go-to solution for email outreach. I absolutely love the pay-as-you-go pricing model.
Bill Stathopoulos
Bill Stathopoulos
Growth Strategist at GrowthRocks
I already was a VoilaNorbert user, but the addition of Enrich just made the product so much better. This is a huge time saver for those that are doing outbound prospecting.
Benji Hyam
Benji Hyam
Co-Founder of Grow&Convert
Fantastic product. Easy to use, providing instant value. Great for retention, learning more about our customers as well as helping out with conversion from trial to paid users.
Michal Sadowski
Michal Sadowski
Co-Founder & CEO of Brand24
It's super valuable to have this information for nurturing and to figure out who downloads our content.
Patrick Whatman
Patrick Whatman
Content Marketer at Mention

Three easy steps

It’s like a washing machine for emails.

Hand in your dirty list.

Upload or copy-paste your list with dirty emails into Norbert's system.

Get a cup of coffee.

Sit back and grab a cup of joe while Norbert works his magic.

Squeaky clean emails.

Download your list, all clean and ready for your next email campaign.

Call Norbert through the API

Built for scale.

Integrate Norbert's Verify API for real-time email verification in your products, databases and processes. Available for PHP, Python, Ruby and .Net.


Email verification superpowers

Take a look under Norbert’s hood.

Email Deduplication

Norbert removes all duplicate email addresses so you don't email people twice.

Syntax Validation

Norbert filters out invalid email formats. Only the good guys get through.

Domain Verification

Norbert gets rid of all email addresses that consist of inactive, invalid or parked domains.

Let’s clean that list of yours

Let's skyrocket your deliverability and keep your sender score safe.


Have over a million emails to verify? Get in touch.

Have more questions about Norbert?

What kind of sorcery is this?

Hello! I'm the majordome behind Voila Norbert where I identify emails and maximize lead generation for my clients. During that process, I have to verify emails one by one. This tool above is coming handy if you only want to verify your email lists in bulk! A question? I'm always around.

Hmm.. so you verify emails, Norbert?

I already verify thousands of emails everyday as part of my incredible email identification algorithm. Now you can tap into this specific part of the algorithm as well!

What will you charge to verify my emails?

I'll charge you only $.003/email up to 500k and $.001/email above that. $2 minimum charge. The more you verify, the less you pay!

Does a "deliverable" email address have absolutely no chance of bouncing?

I can't guarantee 100%, error-free results. Email verification is very complex and depends on each specific email server that your clients are using. I spent the last couple of years trying to figure things out and I think it's working pretty well, but I can't say that it's foolproof.

You have a API I can use?

Our Verify API is fully documented and built to integrate into your work flow or site.

Do I have to sign a contract? Create an account?

No and no. You don't have to create an account and even less enter in some kind of agreement with me. Just submit your list of emails, I'll process them straight away and get back with an answer.

What kind of file format is accepted?

I currently accept CSV files. You can easily export as .CSV from Google Sheets or Excel. Too hard? just paste your email column in the copy/paste section!

What exactly does it mean when an email address is marked "risky"?

Certain email providers are restricting email verification on their servers. I found some ways to minimize that and provide as much information about an email I can, but that still happen from time to time. "Risky" means that I think it's deliverable, but there is a chance of bounce.

What do you check for when verifying emails?

I verify if the connection to the mail server owning this email address can be established properly, if the email still exists and if it doesn't appear to be a catch-all. After that, I also have some secret sauce ingredients to ensure proper accuracy!