I thought I remembered that too. According to this article (https://www.newfangled.com/how-gmail-image-caching-is-affecting-your-email-data/ https://www.newfan

I thought I remembered that too. According to this article (https://www.newfangled.com/how-gmail-image-caching-is-affecting-your-email-data/ https://www.newfangled.com/how-gmail-image-caching-is-affect...) they don't fetch the image until you open it (so only subsequent reads are affected).