EMQ stands for Event Match Quality. It's a score from 1 to 10 that Meta assigns to each type of event it receives from your store.
What it measures
When your store tells Meta there was a purchase, it sends information about who bought: email, phone, name, location, browser identifiers. Meta uses that data to match the purchase to a real person on Facebook or Instagram.
EMQ measures how well that match works.
How to read your score
- 1 to 4: poor. You're sending the event almost empty. Meta can't identify your buyers.
- 5 to 6: weak. Typical of a native integration that hasn't been configured.
- 7 to 8: good. You're sending server-side data with identity parameters.
- 9 to 10: very good. Meta identifies almost all of your buyers.
Where to find it
- Go to Meta Events Manager
- Select your pixel
- Open the events tab and look at the match quality column
- Pay attention to the Purchase event: it's the one that carries the most weight
A low EMQ doesn't mean you're selling less. It means the sales you make teach the algorithm less. They show up in the report but they don't improve your optimization or your lookalike audiences.
Why it matters for your cost per sale
Meta's algorithm looks for people similar to your buyers. The more buyers it can identify accurately, the sharper the pattern it uses to find you new customers. That's why raising EMQ usually lowers CPA without touching a single campaign.