An easy-to-use SaaS application that allows you to quickly verify mailing lists

Ultrafast, robust and easy-to-integrate email verification API

Easily connect your Bouncer account with marketing platform you love, and verify your email list effortlessly

Identify invalid, malicious, or fraudulent email addresses at the moment of entry.

Forget about manual email verification. Just connect to your CRM, configure, and let Bouncer do the rest.

Identify if your email list contains any toxic email addresses

Improve your email campaigns by enriching customer data with publicly available company information

Test your inbox placement, verify your authentication, and monitor blocklists

Check how active your contacts are in their inboxes overall!

Accuracy you can trust. Results you can prove.

Klaviyo email verification

Secure your Klaviyo outreach and engagement rates by using our
superb integration! Bouncer will identify undeliverable emails within
your subscribers and allow you to easily export your results back
to your favourite email marketing platform allowing your inbox
placement to be at the top score!

Now, with AutoClean, you can fully automate your Klaviyo list cleaning.
Effortlessly keeping your database fresh and healthy.

Connecting Klaviyo with Bouncer


Here you will find the instructions on how to connect your Klaviyo account with Bouncer!

With Bouncer, we’ve made the job as easy as possible.
You can connect your account to Klaviyo, verify email addresses through our simple and intuitive system, and export all the cleaned-up data back to your platform.

Integrating Klaviyo with Bouncer is a fast and secure process.

To begin, go to Settings → Integrations inside your Bouncer dashboard and click “Connect with Login” under Klaviyo.
You will be redirected to the Klaviyo login page, where you will be asked to grant Bouncer permission to access basic account details such as your account information, lists, and profiles. After clicking Allow, your integration will be connected and ready to use.

#Tip:
You can also start the connection process directly via this link.
(You must be logged in to your Bouncer account.)

Once connected, you can verify and clean your Klaviyo lists directly through Bouncer.

Verifying your list and sending your campaign.

Start

Open the Verify List tab and select the Klaviyo Import. Select the list that you would like to verify, and start processing it.

Export

Once the verification is complete, you can export the clean data back to Klaviyo by clicking on the export button in the row of completed verification.

Choose

When you choose Export, you have two options:

Remove selected groups of email addresses (e.g., undeliverable or risky ones such as disposable emails).

Add Recommendations* – lets you take full control of your list quality. After the verification, simply use the intuitive configurator to decide which emails should be marked as keep, suppress, or quarantine, and confirm your choices.

*Add Recommendations option:

Bouncer will then automatically enrich your Klaviyo contacts with custom properties (bouncer_recommends and bouncer_recommends_update_at), empowering you to build smarter segments, more precise automations, and cleaner campaigns.

Important: When removing the integration in Settings → Integrations → Remove Integration, Bouncer will also revoke the Klaviyo token. This ensures that the application is fully uninstalled both on the Bouncer side and within Klaviyo.

or use AutoClean

01

Set up AutoClean

Go to the Verify List section in Bouncer, choose a new list via your Klaviyo integration, pick the list to be monitored, and select the autoclean option.

02

Customize verification logic

You can: verify the entire list upon setup, auto-verify new contacts every hour, and reverify existing contacts every x days.

03

Apply export rules

Based on verification status and toxicity score:

  • Keep: Safe email addresses
  • Suppress: Undeliverable, toxic, or disposable
  • Quarantine: Everything in between

04

Monitor and manage

View all AutoClean jobs in one dashboard:

  • See creation date, last run, next run
  • Edit, pause, or remove any job anytime
  • Manually trigger re-verification when needed

05

Use Bouncer Recommendations

Use the Bouncer Recommends field in your CRM to segment or trigger workflows.

Terminology

  • Deliverable
    The recipient’s email provider has confirmed that the email address exists, it is safe to send.
  • Risky
    The email address may result in a bounce or low engagement. Risky addresses: Accept All, Full Mailbox, or Disposable.
  • Undeliverable
    The address is either syntactically incorrect or does not exist.
  • Unknown
    We were unable to receive a response from the email provider. The credits for such verification will not be deducted from your balance. We never charge you for the email addresses with this status.

Pro-tip #1:

You can find more information regarding statuses in the Terminology section on your Bouncer account.

Pro-tip #2:

You can download all your verification results in a CSV file if needed.

All done!

Now you can simply watch and enjoy your Interested stats increasing 🙂

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Start now and enjoy your campaigns!

Make list validation part of your process before each campaign, and you’ll receive far better results, rates and ROI than ever.