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Glossary · Measurement

What is Event Match Quality?

Event match quality is a 1–10 score showing how well the conversion data you send matches a user on the platform. As the score drops, the ad algorithm cannot learn who the conversions come from and optimization degrades.

Detail

Fields that raise the score: hashed email, phone number, first and last name, city, year of birth and browser identifiers. Most stores already collect phone and email at checkout but never send them; adding just those two lifts the score noticeably. A score below 6 means serious data loss.

Example

A setup sending email only tends to score 5–6; add phone and address and it can reach 8–9.
FAQ

Common questions on this topic.

How is Event Match Quality calculated?

Fields that raise the score: hashed email, phone number, first and last name, city, year of birth and browser identifiers. Most stores already collect phone and email at checkout but never send them; adding just those two lifts the score noticeably. A score below 6 means serious data loss.

Why does Event Match Quality matter?

Fields that raise the score: hashed email, phone number, first and last name, city, year of birth and browser identifiers. Most stores already collect phone and email at checkout but never send them; adding just those two lifts the score noticeably. A score below 6 means serious data loss.

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