Free Email Marketing Tool

CSV Excel Email Formatter

Clean CSV or Excel email columns, normalize contacts, remove duplicates, filter domains, and export campaign-ready lists.

Privacy: Your CSV/Excel files are processed in your browser. Nothing is uploaded to the server.

Rows loaded

Emails found

Valid emails

Duplicates

Domains

Output rows

1. Upload or Paste Data

Upload CSV/XLS/XLSX or paste spreadsheet-style data.

Upload file

📊

Drop CSV, XLS, XLSX here

Works locally in your browser

Paste CSV / spreadsheet data

2. Formatting Options

Email column

Output mode

Sort

Only include domains (optional)

Exclude domains (optional)

Lowercase emails

Trim spaces

Remove duplicates

Remove invalid

3. Formatted Output

Campaign-ready emails or clean rows.

0 rows

Domain Summary

Domain	Count	Percent
No data yet.

About CSV Excel Email Formatter

CSV Excel Email Formatter helps email marketers prepare contact exports for CRM imports, email campaigns, cold outreach, newsletter tools, and lead distribution.

Common use cases

Clean messy CSV or Excel contact exports.
Normalize email capitalization and spacing.
Remove duplicate or invalid email rows.
Export email-only, email-domain, or clean row formats.