What happens to past emails if I delete their Library images?

I have dozens of older images used once in a prior email that are clogging up my Library. I will not need them again and would like to delete them permanently, but my question is: will these images properly display in older emails once deleted? Or will the "Download pictures" technology in email (i.e., Outlook) NOT FIND the necessary resource and display only a Question Mark?

6 replies
4 Text Marketing Misses (and Their Fixes)

Join us for this free, 60-minute webinar as we break down the biggest mistakes that alienate customers and hold your business back.