Verify a Klaviyo list of 100,000 profiles
Cleaning a Klaviyo list of 100,000 on SimpleVerifier costs $39 (one month of Pro), about $0.39 per 1,000, and takes about 8 days at today's shared pace. Export it as a CSV, upload it, and download the valid, risky and invalid files with your original columns kept.
By SimpleVerifier Team · Updated · Export steps follow each tool’s own help article, linked below. No accuracy test was run.
Get the list out
A Klaviyo list or segment of store subscribers, exported to CSV before a big campaign or a flow change.
Export 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.
Source: Klaviyo help · Verify a Klaviyo export
Free tools that read this export in the browser: Klaviyo profiles to email list, Klaviyo email list cleaner.
What verification does to this list
- Profiles whose mailbox no longer exists come back invalid, so you can suppress them in Klaviyo before they turn into bounces.
- Typos entered at signup or checkout come back invalid when the misspelled domain has no mail server or the mailbox does not exist.
- Catch-all domains come back risky, never valid, so you decide how to treat them instead of guessing.
- Every property you exported is kept in the cleaned files, so they map back onto the same profiles.
Klaviyo: Klaviyo publishes no bounce enforcement number. Its deliverability guidance flags a bounce rate above 2% as needing attention.
Source: Klaviyo help: deliverability
What 100,000 emails cost on SimpleVerifier
Every plan or pack that takes the whole list in one go, cheapest first. Per 1,000 is the price divided by 100,000. Other verifiers’ published prices for this size are on the 100,000 emails page.
- Pro, one month$39 ($0.39 per 1,000)
the first 100,000 checks a month at full speed, then slower, never cut off: all 100,000 at full speed
- One-time pack of 100,000$79 ($0.79 per 1,000)
Credits never expire; standard speed; CSV verification only
- Business, one month$99 ($0.99 per 1,000)
the first 300,000 checks a month at full speed, then slower, never cut off: all 100,000 at full speed
- Agency, one month$249 ($2.49 per 1,000)
the first 750,000 checks a month at full speed, then slower, never cut off: all 100,000 at full speed
Pro is never cut off: the first 100,000 checks a month at full speed, then slower, never cut off. Monthly plans renew until you cancel; packs are one payment.
A different size
How long 100,000 emails take
- We run about 13,000 mailbox checks a day today, shared by all customers. At today's shared pace, 100,000 checks in one list take about 8 days to finish. The list queues and its card shows the ETA; nothing is cut off.
- Check capacity is shared by all customers: list jobs run at up to about 60 addresses a minute while the day's capacity lasts, so a very large list queues rather than failing and can take days.
- Bad syntax, dead domains and disposable addresses come back at once, and results confirmed in the last 14 days return instantly, so a list you checked recently finishes sooner. Each job card shows an estimated finish time.
What you get back
- Valid
- The recipient's mail server confirmed the mailbox exists.
- Risky
- The domain works but the mailbox could not be confirmed, usually a catch-all domain that accepts every address. Anything unconfirmed is reported as risky, never as valid.
- Invalid
- The server confirmed the mailbox does not exist, or the syntax is broken, the domain has no mail server, or the domain is a known disposable provider.
Results download as separate files for valid, risky and invalid. The email column is found by its header or its contents, every other column in your file is kept, and the cleaned files come back with your original columns, so they import straight back into your sending tool.
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. These steps follow Klaviyo's own help article.
- How much does it cost to clean a Klaviyo list of 100,000?
- $39 on SimpleVerifier (one month of Pro), about $0.39 per 1,000. Duplicates and addresses we cannot check are not counted, so the real number is usually lower than the row count.
- How long does a list of 100,000 take?
- About 8 days at today's shared pace of about 13,000 mailbox checks a day, shared by all customers. The list queues rather than failing, the job card shows an estimated finish time, and nothing is cut off.
- Can I upload all 100,000 in one file?
- Yes. Uploads take up to 100,000 rows in one CSV, and the email column is found automatically.
- Does verification tell me who agreed to be emailed?
- Verification tells you whether a mailbox can receive mail. It does not tell you whether the person agreed to hear from you, so check consent before you mail anyone, whatever the result.
- Can I try it before paying?
- Yes: the first 100 email checks are free with a Google sign-in and no card, on the same SMTP mailbox check the paid plans run. Upload a sample of the export first, then pick the plan or pack that fits.
Check a sample of your list first
Duplicates and addresses we cannot check are not counted, so the real number is usually lower than the row count. Start with the free checks on part of the list, then pick the plan or pack that fits.