Privacy-First Email Validation: Clean Your List with This Free, Open-Source Tool | FunLab

EmailListCleaner.org is a free, open-source tool for validating email addresses, ensuring privacy by performing the entire process client-side.

The Backstory

As The Curator, I stumbled upon EmailListCleaner.org and was immediately charmed. The creator's dedication to privacy and open-source principles is refreshing. The tool's simplicity, combined with its powerful features, resonated with my design sensibilities. Plus, the cat logo? Genius. I particularly love the clever approach of performing the validation entirely in the user's browser, minimizing the need to trust third-party services – a delightful solution to a common problem.

How to Play

Paste your email list (one email per line).Customize filtering options (role-based, disposables, etc.)Hit 'validate' and watch the magic (and charts!) unfold.

From The Community: Top Comments

Why is everyone hating this sounds like a good app if it does what op claims

I have a strong opinion on this: please do not try to validate emails

I use aliases everywhere (`myname+amazon@myowndomain.com`) which is awesome for sorting emails and knowing where it came from (especially useful to throw away some leaked email aliases). On top of the plus sign, I use my custom domain with no website on it. I once needed a special char in it, without success on many websites. I was close to using the .42 TLD for my email server, some time ago

The email address RFC is very complex, to the point a proper RFC-5322 compliant regex requires several hundreds of chars. A lot of exotic email addresses can be supported, as illustrated on Wikipedia: https://en.wikipedia.org/wiki/Email_address#Example

When you develop a software and suddenly need to support email notifications, root@localhost *is a valid email address*. If a user wishes to use a throwaway email, they'll always find a way, and they probably have a good & legit reason to do so

In the end, **the only proper way to validate an email address is to send a confirmation link to it**. No other trick would work better, and anything else will just be a burden for end users, and for the developers too.

What are your proposed use cases for this?

So apart from the privacy/client-side aspects you’ve called out about this site, how do your ‘valid’ results stack up against the pay-to-use platforms? Or more directly, what are the technical similarities/differentiators between this tool and the pay-to-use tools?

have you build this tool using php?

The Remix Station

Think this toy has more potential? Vote for your favorite remix idea!

🐈 Email Catnip

Gamify the process by awarding points for correctly identified email types, and unlock new cat-themed backgrounds based on progress.

0 Votes

🧙‍♂️ Email Alchemist

Transform invalid emails into whimsical creatures using generative art, based on the email structure and domain.

0 Votes

Frequently Asked Questions

How accurate is EmailListCleaner.org compared to paid services?

While it performs robust syntax and domain checks, it can't guarantee 100% accuracy like some paid services. However, its client-side processing prioritizes privacy.

Can I use this tool for extremely large email lists?

The tool's performance depends on your browser's RAM. For massive lists, consider splitting them into smaller batches.