Event Matching Quality
Meta score of how well server-side events are matched to users.
Event Matching Quality (EMQ) is Meta's rating of how well your conversion events are matched back to individual Meta users, scored on a 0-to-10 scale per event per dataset. It is one of the highest-leverage optimisation levers available to UK financial advisers running Meta Ads, and most accounts are leaving material performance on the table.
EMQ rises with the number and reliability of customer-matching parameters sent with each event: email, phone number, first and last name, city, postcode, date of birth, gender and external ID. Accounts sending fewer than four parameters typically score 4 to 5; accounts sending seven or more, consistently hashed, score 8 to 10.
Why it matters for adviser lead generation: higher EMQ directly improves Meta's ability to attribute conversions in a post-ATT, post-third-party-cookie environment, which in turn improves the audience modelling and bid optimisation that Meta uses to find similar converters. Accounts that move from EMQ 5 to EMQ 8 typically see 20 to 40 per cent more attributed conversions and 10 to 25 per cent lower CPL within 30 days, without any change in creative or spend.
The practical route to higher EMQ is a properly configured Conversions API stream (server-side event sending from the CRM or tag manager) alongside the Meta Pixel, with all available PII parameters hashed and passed. Meta Events Manager displays per-event EMQ scores and the parameters it received, which makes the fix observable.
See also: Conversions API, Meta Pixel, hashed PII, iOS 14.5 signal loss.