Fix your messy email list in seconds
Remove duplicates, fix typos like gmial.com, split big lists and compare two lists. Free, private and built for real-world contact lists.
- 100% free
- Nothing uploaded
- Keeps every column of your spreadsheet
List Fixer
Paste anything: a column of emails, a whole spreadsheet, a CSV export, names and addresses mixed together. Or drop a .csv or .txt file in the box. Spreadsheets keep every column: names, phones, notes and all.
Runs entirely in your browser. Your list is never uploaded.
More free tools
Each one does a single job well.
Remove duplicate emails
Strip out repeated addresses, including Gmail dots and +tags that reach the same inbox.
Fix email typos
Catch gmial.com, yahoo.con, hotmial.com and friends, and fix them in one click.
Split a list into batches
Cut a big list into batches of any size and download each one.
Compare two lists
Merge two lists, remove unsubscribes from a list, or find who is on both.
Free Excel & Sheets template
A ready-made spreadsheet that flags duplicates, typos and broken addresses as you paste.
Guides for cleaner lists
Step-by-step help for Excel, Google Sheets, CSV files and better sending.
How to Remove Duplicate Emails in Excel, Including the Ones It Misses
Use Remove Duplicates, highlighting and a helper column to catch the duplicate emails Excel misses, and keep the best row.
Read the guide →How to Remove Duplicate Emails in Google Sheets
Delete duplicate emails in place or build a self-updating clean list with UNIQUE, COUNTIF and conditional formatting.
Read the guide →How to Find and Fix Typos in Your Email List
Find misspelled domains like gmial.com and .con in minutes, fix them safely, and keep new typos off your list.
Read the guide →How to Merge Two Contact Lists Without Losing Anything
Combine contact lists the safe way: line up columns, match on email, keep the best details and every unsubscribe.
Read the guide →What a Suppression List Is and Why You Keep It Forever
Who belongs on your do-not-send list, why it's permanent, and how to remove those people from every list before sending.
Read the guide →How to Split a Big Email List Into Smaller Batches
Cut a big list into batches for sending limits, imports and test sends, with spreadsheet formulas or a free tool.
Read the guide →Frequently asked questions
Is ListaFix free?
Yes. Every tool on ListaFix is free, with no account and no limit on how often you use it.
Is my list uploaded anywhere?
No. The tools run in your web browser using JavaScript, so the emails you paste or open never leave your computer. You can even disconnect from the internet after the page loads and the tools keep working.
Does ListaFix check whether emails really exist?
No. ListaFix fixes the format of your list: duplicates, typos, broken entries and spacing. To find out whether each address is real and can receive mail, use Veml, which checks every mailbox without sending any email.
What can I paste into the List Fixer?
Almost anything that contains email addresses: a column copied from Excel or Google Sheets, a whole CSV file, contacts in "Name <email>" format, or text with addresses mixed in. The fixer pulls out every address and ignores the rest.
How big a list can it handle?
Lists of tens of thousands of addresses work fine on a normal computer, because everything happens on your own device rather than on a server.