<b>Save rate is the only engagement metric that correlates with 90-day residual sales.</b>

<b>Save rate is the only engagement metric that correlates with 90-day residual sales.</b>

Median save rate (saves / reach) vs delayed conversion:
— High residual creators: 1.8–3.4%
— Median: 0.6–1.2%
— Flat residual: 0.1–0.4%

Likes and comments spike on day one and decay; saves signal intent-to-return, which shows up as conversions weeks after the post. A high-save creator keeps selling long after the campaign window closes.

So what: weight saves when buying for evergreen or considered-purchase products.

Benchmark: n=380 posts tracked to 90-day attribution, considered-purchase verticals.