Professional Email Normalizer
Normalize email addresses by removing dots and plus aliases for Gmail, Outlook, iCloud, and more. Includes MX record lookup for business domains. 100% private.
How to Use
The Professional Email Normalizer is a high-performance utility designed to identify the "Canonical" version of an email address. It helps developers and security professionals detect duplicate accounts and prevent Sybil attacks.
How to use this tool
- Paste Emails: Enter your list of emails into the editor. You can use one per line, or separate them with commas or semicolons.
- MX Lookup: By default, the tool performs real-time DNS lookups for custom domains to identify if they use Google Workspace or Microsoft 365.
- Review Results: The table instantly updates showing the original email, its normalized version, and the detected provider.
- Deduplicate: Check the stats ribbon to see how many unique users are actually in your list.
- Export: Download your processed list as a CSV file for use in other applications.
About This Tool
Why Normalize Emails?
Email providers like Gmail treat john.doe@gmail.com and johndoe@gmail.com as the same account. Furthermore, adding a plus alias like user+test@gmail.com still routes to user@gmail.com.
Malicious users often exploit these rules to create hundreds of "unique" accounts on websites using a single email inbox. Normalization strips away these aliases, revealing the true underlying account and protecting your platform's integrity.
Why Use This Tool
Intelligent Provider Detection
Most basic normalizers only support @gmail.com. Our professional version uses an anonymous **DNS-over-HTTPS** bridge to query the MX records of custom domains. This allows us to apply Gmail normalization rules to corporate emails using Google Workspace and Outlook rules to those on Microsoft 365, ensuring 99% accuracy across business and personal accounts.