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CSV CHECK

Check Klaviyo Profile or List CSV Import Errors

Check Email, Phone Number, ID, and consent fields before importing profiles or lists.

Check CSV

🔒 Analysis runs in your browser. The CSV file itself is not uploaded to BlueprintLab.

What this tool checks

Checks CSV / 50 MB requirements, headers, Email or Phone Number on every row, invalid emails, and duplicate identifiers.

About this tool

Check Klaviyo Profile or List CSV Import Errors is a free web tool from BlueprintLab Tools. Check a Klaviyo Profile or List CSV before import. Find Email, Phone Number, ID, and consent-field format errors directly in your browser.

Designed for small marketing and CRM tasks such as preflight checks before importing campaign or customer data.

No account is required. The tool is designed to complete the task directly in your browser with a short input → process → result flow.

How to use

  1. Choose the file you want to check.
  2. Select “Check CSV”.
  3. Review the detected issues and save the result if needed.

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