Yahoo! Mail Introduces Image Caching—What Marketers Must Know

Yahoo! has quietly changed the way it handles images for Yahoo! Mail users. The inbox provider now caches all images and serves them via their own proxy servers. This has a significant impact on the level of insights marketers can get from Yahoo! Mail users, and it can even impact the reliability of dynamic content.

Here’s a breakdown of everything marketers must know about image caching in Yahoo! Mail.