Unfortunately, marketers have limited control over image caching as it is managed by the email client or webmail service. However, there are some strategies to mitigate its impact:
Unique Image URLs: Using unique URLs for each recipient can help track individual opens more accurately. Image Expiration: Setting HTTP headers to specify image expiration times can encourage clients to fetch the latest version of the image. Email Content: Including a mix of text and images ensures that key messages are delivered even if images are not loaded or cached.