How to test content vs engagement impact separately?

Separating content and engagement effects requires controlled testing:

Test content variation with fixed engagement: Send different content versions to similarly engaged segments. Placement differences indicate content impact.

Test engagement variation with fixed content: Send identical content to engaged versus disengaged segments. Placement differences indicate engagement impact.

Seed limitation: Seeds lack engagement history, so they only measure content effects. Real segment testing is needed for engagement isolation.

Isolating variables reveals which lever moves the needle for your specific situation.

Change one variable at a time to understand what steers the ship.