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Matchrate in Google Ads very low

  • June 17, 2025
  • 1 reply
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I have synchronized Klaviyo audiences with Google Ads for better targeting, but I see that the match rate is only 10-15%. Does anyone have experiences with this and a solution to increase the match rate?

Best answer by zacfromson

Hi ​@nynketomorrowmen11 - You’re not alone, Klaviyo’s Google Ads integration can produce low match rates, and it typically comes down to how limited the synced data is. Here is why this can happen:

  • Klaviyo only syncs email addresses by default. Google Ads performs best when it has multiple identifiers (like phone number, name, ZIP, country).
  • Emails alone, especially business or inactive emails often won’t match well.
  • No enhanced match logic: Klaviyo doesn’t pre-hash or normalize data the same way as manual uploads do, so Google has less to work with.

What You Can Do to Improve Match Rate:

  1. Manually export your Klaviyo list, then upload it into Google Ads as a Customer Match audience with as many fields as possible:

  • Email
  • Phone number
  • First name / Last name
  • Country / ZIP
  1. Focus on personal emails (e.g., @gmail.com), create a Klaviyo segment filtered by email domains to test match rate separately.
  1. Clean and format your list before upload:
  • Lowercase emails
  • Add country codes to phone numbers
  • Remove invalid characters
  1. Use Enhanced Conversions in Google Ads alongside your audience targeting, this improves match quality using site visitor data.

1 reply

zacfromson
Expert Problem Solver III
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  • 2025 Champion
  • 82 replies
  • Answer
  • June 17, 2025

Hi ​@nynketomorrowmen11 - You’re not alone, Klaviyo’s Google Ads integration can produce low match rates, and it typically comes down to how limited the synced data is. Here is why this can happen:

  • Klaviyo only syncs email addresses by default. Google Ads performs best when it has multiple identifiers (like phone number, name, ZIP, country).
  • Emails alone, especially business or inactive emails often won’t match well.
  • No enhanced match logic: Klaviyo doesn’t pre-hash or normalize data the same way as manual uploads do, so Google has less to work with.

What You Can Do to Improve Match Rate:

  1. Manually export your Klaviyo list, then upload it into Google Ads as a Customer Match audience with as many fields as possible:

  • Email
  • Phone number
  • First name / Last name
  • Country / ZIP
  1. Focus on personal emails (e.g., @gmail.com), create a Klaviyo segment filtered by email domains to test match rate separately.
  1. Clean and format your list before upload:
  • Lowercase emails
  • Add country codes to phone numbers
  • Remove invalid characters
  1. Use Enhanced Conversions in Google Ads alongside your audience targeting, this improves match quality using site visitor data.