How do Yahoo’s engagement models differ from Gmail’s?

Yahoo's engagement models differ from Gmail by placing less emphasis on individual user behavior prediction and more on aggregate sender metrics. While Gmail personalizes filtering heavily based on each user's interaction history, Yahoo applies more uniform filtering based on overall sender reputation.

This means strong engagement from some Yahoo subscribers does not necessarily protect messages to less engaged subscribers as much as it would at Gmail. Yahoo's systems treat sender reputation more holistically rather than adjusting per recipient.

Yahoo does track engagement signals including opens, clicks, and time in inbox, but these signals inform sender reputation rather than individual delivery decisions. The practical implication is that maintaining overall list quality matters more at Yahoo than cultivating engagement from specific high value subscribers.