Cool - not saying you have to do it like them, but the most popular option there is to block all images globally but allow the person to click a button to unblo

Cool - not saying you have to do it like them, but the most popular option there is to block all images globally but allow the person to click a button to unblock images for that specific email, which then enables a dialogue to "always unblock images from this sender." I like that workflow; may be something to consider. I block all images but allow images from known senders, like my parents or co-workers.