How do I export my profiles from Klaviyo?

In Klaviyo, go to Audience > Lists & segments. Click into the list or segment. Open the Manage list (or Manage segment) dropdown. Choose Export list to CSV and pick the properties to include. Only Owner, Admin and Analyst roles can export. To export every profile, build a segment that includes everyone first.

Does a "valid" result mean the person will read my email?

No. Verification tells you whether an address can receive mail, not whether the person reads it, wants it or agreed to it. It cannot detect spam traps either.

What does a risky result mean?

A risky address could not be confirmed as a real mailbox, usually because the domain accepts all mail (catch-all) or the provider will not say. Unconfirmed addresses are never reported as valid. Keep them out of your first send and mail them later, in small batches.

Is there a free way to try this on my Klaviyo list?

Yes. Sign in with Google and the first 100 addresses are checked free, with results to download and no card. After that, verification is $29.99 a month on the Pro plan.

Clean your Klaviyo list

Export your profiles from Klaviyo as a CSV, verify every address, then import the valid file back and keep the risky one out of your first send. Verification finds addresses that cannot receive mail. It cannot tell who will read or welcome your email, and an address it cannot confirm is called risky, never valid.

Export steps and bounce rules read from Klaviyo's own pages, checked 23 Oct 2026.

1. Export the CSV from Klaviyo

In Klaviyo, go to Audience > Lists & segments.
Click into the list or segment.
Open the Manage list (or Manage segment) dropdown.
Choose Export list to CSV and pick the properties to include.

Only Owner, Admin and Analyst roles can export. To export every profile, build a segment that includes everyone first.

Source: Klaviyo help. The shorter version is on the Klaviyo export page.

2. Klaviyo's bounce rule: no number published

Klaviyo publishes no bounce enforcement number. Its deliverability guidance flags a bounce rate above 2% as needing attention.

Source: Klaviyo help: deliverability, read 23 Oct 2026.

Where a platform does not publish a number, we say so rather than quote a blog. Plan as if the line were 2%.

Other platforms' lines are in bounce rate limits by platform.

3. What verification can and cannot tell you

It can tell you

The address is malformed or the domain has no mail servers.
The mailbox does not exist, where the provider answers the check.
The domain is disposable.
The domain accepts all mail, so the address cannot be confirmed.

It cannot tell you

Whether the person reads your email or agreed to receive it.
Whether the address is a spam trap.
Whether a risky address is real. Catch-all domains and providers that hide mailbox status stay unconfirmed.
Whether the contact still works at that company.

Unconfirmed always means risky, never valid. You get three files back, valid, risky and invalid, with your original Klaviyo columns kept.

4. Import the clean file back

Keep the columns as they came out of Klaviyo, so the file maps back to the same fields on import.
Import the valid file into Klaviyo or the tool you send from. Use Klaviyo's own import help for the exact screens.
Hold the risky file back. If you send to it, send small batches later and watch the bounce rate against the rule above.
Drop the invalid file, or mark those contacts as bad email in Klaviyo so they are not mailed again.

Check a Klaviyo address, then your list

Type any address. It gets the same check the paid plans run: syntax, the domain’s mail servers and, where the provider allows it, a live mailbox check. Nothing is sent to the address.

Email address

Five checks a minute, no account needed. Nothing is sent to the address — we ask its mail server whether the mailbox exists, then disconnect.

Have a list? Sign in with Google and the first 100 addresses are checked free, with results to download. No card.

By continuing you agree to our Terms and Privacy Policy.

Common questions

How do I export my profiles from Klaviyo?: In Klaviyo, go to Audience > Lists & segments. Click into the list or segment. Open the Manage list (or Manage segment) dropdown. Choose Export list to CSV and pick the properties to include. Only Owner, Admin and Analyst roles can export. To export every profile, build a segment that includes everyone first.
What bounce rate does Klaviyo allow?: Klaviyo publishes no bounce enforcement number. Its deliverability guidance flags a bounce rate above 2% as needing attention. Source: Klaviyo help: deliverability, read 23 Oct 2026.
Does a "valid" result mean the person will read my email?: No. Verification tells you whether an address can receive mail, not whether the person reads it, wants it or agreed to it. It cannot detect spam traps either.
What does a risky result mean?: A risky address could not be confirmed as a real mailbox, usually because the domain accepts all mail (catch-all) or the provider will not say. Unconfirmed addresses are never reported as valid. Keep them out of your first send and mail them later, in small batches.
Is there a free way to try this on my Klaviyo list?: Yes. Sign in with Google and the first 100 addresses are checked free, with results to download and no card. After that, verification is $29.99 a month on the Pro plan.