Mask Emails in a CSV File
Hide email addresses and phone numbers in a CSV file before you share it. Detects personal columns for you. Free, in your browser.
How to use the Mask Emails in a CSV File
Hide sensitive values before sharing data.
- Load your data
- Check the suggested methods
- Preview and download
Tips
- Personal data (email, phone, names…) is detected automatically.
- Consistent masking gives the same result for the same input.
- Add a salt to make hashed values harder to guess.
Example
Input: ada@example.com
Output: a**@example.com
Frequently asked questions
How do I hide emails in a CSV?
Upload the file, check the detected email columns, pick a masking style and download the safe file.
Can I keep the same masked value for the same email?
Yes. Consistent masking gives the same result for the same input, so joins still work.
Is masking the same as anonymizing?
Not always. Combined details can still identify people, so review before sharing.
Can a hash be reversed?
Not directly, but easy-to-guess values can be matched. Use a salt.
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