Personalized Copy Wasn't the Main Source of the Conversion Lift
The team's first iteration assumed that making the email text more personalized would create the step-function improvement. Testing showed that the decisive factor was recommendation relevance: accurately identifying the recipient's job to be done and surfacing content that could help accomplish it.
- The initial hypothesis emphasized personalized output
- Testing separated copy personalization from recommendation quality
- Job inference proved more important than clever wording
- Relevant content created the strongest conversion effect
“what we found was really where the step function conversion rate improvements came is not necessarily in how personalized this text is”
“that's where the magic is”