Dev Tools · 1h ago
Adding hashed phone to Meta CAPI boosts match rate 13 points
A developer found that adding a hashed phone number field to an existing Meta Conversions API integration raised match rate from 66% to 79% overnight. Adding an external_id further improved it by 4-6 points. Below 70% match rate, effective CPM can increase 25-40% within 7-10 days.
Meridian48 take
The post highlights a common oversight: CAPI integrations often underperform because they rely on email alone, which can be weak in markets like Korea where Kakao-linked emails dominate.
Read the full reporting
Adding one field to our CAPI payload moved match rate from 66% to 79% overnight →
DEV Community
meta-conversions-apiad-tech