CSV Email Deduplicator
A powerful tool to clean your email lists by removing duplicates and filtering unwanted addresses
Deduplication Mode
Removes emails with domains found in the Cross Reference List. Example: If 'test@example.com' is in the cross-reference, all '@example.com' emails will be filtered.
1Upload Cross Reference List
This file should contain email addresses to extract domains from. Emails with matching domains will be filtered out.
Upload Cross Reference List
Drag and drop your CSV file here, or click to browse
2Upload List to Process
This file can have multiple columns, and you'll select which column contains the email addresses. All columns will be preserved in the output.
Upload List File
Drag and drop your CSV file here, or click to browse
3Filter Keywords (Optional)
Filter by Keywords
Optionally filter out email addresses containing specific words (separate by commas)
Any email address containing these words will be excluded from the output. This is useful for filtering out test or temporary accounts.
Your data stays in your browser. This application processes files directly on your device without sending any data to external servers.