ListBouncer
About ListBouncer

The bouncer at the door of your email list.

ListBouncer checks every address on your list before you send to it. Upload a CSV and you get back a clean file, a health grade, and a receipt of what we removed and why.

Try free with 100 addresses Talk to us
170+
customers have cleaned a list
260+
lists cleaned
200,000+
addresses checked
Who it's for

People who send to their own lists

If you can export a CSV, you can use ListBouncer.

  • Newsletters

    Newsletter writers

    Your list grew for years and some of those inboxes are gone. Clean it before your next issue so bounces don't drag your open rates and your sender reputation down.

  • Online stores

    Shops and ecommerce

    Customer emails come from checkouts, pop-ups and old spreadsheets, typos included. Clean the list before a big campaign and export it straight back into MailPoet, Mailchimp or Klaviyo.

  • Small business

    Small businesses

    A few hundred contacts or 50,000, no technical setup either way. Export a CSV, drop it in, and get a clean file back. Nothing to install, no subscription.

How we check

Five checks.
Every address.

Each address lands in one of five groups: Safe, Major provider, Risky, Will bounce or Unknown, with the reason shown next to it.

What each result means

  1. Syntax

    Broken and malformed addresses are caught first, and never charged.

  2. Mail servers

    We look up the domain. No mail server means nothing can be delivered.

  3. Throwaway domains

    Matched against about 3,500 known disposable email providers.

  4. Shared inboxes

    info@, sales@ and support@ get flagged so you decide whether to keep them.

  5. The mailbox itself

    We ask the mail server whether the mailbox exists, then show you the reason for every result.

House rules

What we won't do

  1. We don't guess.

    Yahoo, Outlook, Hotmail and AOL don't let anyone confirm a single mailbox, so those addresses get their own group instead of a made-up verdict.

  2. We don't keep your file.

    The CSV you upload is processed in memory and never stored. Results stay in your account until you delete them.

  3. We don't sell your addresses.

    Not to anyone, for any reason.

  4. Your credits don't expire.

    Pay once for a pack. There's no subscription, and credits wait until you need them.

Independent

ListBouncer isn't owned by or connected to any email platform or verification company. And no, we're not Bouncer. Just a similar name.

Listed on

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A real person reads every message.

Questions about your list, a bigger pack, or how we handle data? Email support@listbouncer.com, or read our privacy policy and sub-processors.

Try free with 100 addresses