List Cleaner · Prospecting

Clean a messy lead list in seconds

Paste rows from Google Sheets or drop a CSV. Duplicates merge, names get proper capitals, full names split and broken emails drop out. Then download a CSV your CRM will accept the first time.

Get Sales Util · $29$49 See how it works
  • Pay once, no subscription
  • Plus 13 more sales tools
  • 14-day refund
The real extension, not a mockup
Without List Cleaner
  • Sorting by email to spot duplicates by eye
  • Writing PROPER() formulas that turn O’Brien into O’brien
  • Finding out about bad emails when the bounces come back
With List Cleaner
  • Duplicates merged, with blanks filled from the copy
  • JOHN SMITH → John Smith, o’brien → O’Brien
  • Invalid and personal emails removed before you import
9
fixes you can switch on or off
25 MB
CSV files, or paste from any sheet
0
rows uploaded to a server

What List Cleaner does for you

Merge duplicates, keep the data

Rows with the same email become one. If the copy has a phone or title the first row was missing, it’s kept.

Names that look hand-typed

Fixes ALL CAPS and all-lowercase names, keeps Mc and O’ names right, and splits “Jane Doe” into First Name and Last Name.

Emails you can actually send to

Lowercases addresses, strips mailto: and <brackets>, and can drop broken addresses and Gmail, Yahoo, Outlook or iCloud ones.

Your list stays in your browser

Cleaning happens on your computer. The pasted list isn’t uploaded anywhere and is cleared when you close the browser.

Three steps, right in your toolbar

  1. 1

    Paste or drop your list

    Copy rows straight from Sheets or Excel, or drop a CSV up to 25 MB. Columns like email, name and company are detected for you.

  2. 2

    Pick what to fix

    Turn fixes on or off: duplicates, capitals, name splitting, emails, company names, spaces and empty rows. The preview updates instantly.

  3. 3

    Export it clean

    Download a CSV for HubSpot, Salesforce or any CRM, or copy the rows and paste them back into your sheet.

Everything it handles

  • Merge duplicates: same email, or identical rows
  • Fix name capitalization (McDonald, O’Brien, van Beethoven)
  • Split full names into first and last
  • Normalize emails: lowercase, no mailto: or <brackets>
  • Remove invalid emails and personal addresses
  • Clean company names: “Acme, Inc.” → “Acme”
  • Trim extra spaces and remove empty rows
  • See exactly which cells changed before you export

Who it’s for

SDRs before a sequence

Clean an export from Apollo, a conference list or a LinkedIn scrape before it goes into your sequencer, so first-name fields read right.

Founders doing their own outreach

Turn a messy spreadsheet of leads into one tidy list without learning a data tool.

RevOps before an import

Catch duplicates and broken emails before they land in the CRM and need cleaning there.

Works well with

Same extension, same price. These pair naturally with List Cleaner.

All 14 tools
Email Pattern Finder

Find the likely work email from a name and a domain

Phone Formatter

Clean phone numbers, with the local time there

Contact CaptureAI

Turn email signatures and business cards into contacts

List Cleaner questions

Something else? or email us.

Which file types work?

CSV files up to 25 MB, or rows pasted straight from Google Sheets, Excel or Numbers. The clean list downloads as a CSV.

How does it decide what’s a duplicate?

Rows with the same email address are merged into one. Empty cells in the first row are filled from the duplicate, so you don’t lose a phone number or job title.

Does it verify that emails exist?

No. It removes addresses that are clearly broken and, if you want, personal ones like Gmail or Yahoo. It doesn’t contact mail servers to check mailboxes.

Is my lead list sent anywhere?

No. The cleaning runs in your browser. The pasted list is kept only for the browser session and never synced to your account.

Can I buy List Cleaner on its own?

No. List Cleaner comes with all 14 tools in Sales Util, for one payment of $29 (the launch price until December 5, then $49). No subscription, and a 14-day refund if it isn’t for you.

Which browsers does it work in?

Chrome and other Chromium browsers: Edge, Brave, Arc, Opera and Vivaldi. One license covers up to 3 browsers. Firefox and Safari aren’t supported yet.

List Cleaner, plus 13 more tools. One payment.

Every tool in Sales Util, every update, in your browser for good. No subscription.

LifetimeLaunch price
$29$49

One-time payment. Goes up to $49 after December 5 (… left).

Get Sales Util

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Prices in USD. Taxes may apply.

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  • Use it on up to 3 browsers: Chrome, Edge, Brave, Arc, Opera or Vivaldi
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  • 14-day refund, no questions asked