When you delete an image file that's in the design studio, and used in email programs... when you delete that image, will it auto-strip that image from pre-existing/approved emails?
Not a problem, just an observation:
I was just cleaning up some images I didn't want in the design studio (duplicate files, images that never got used, etc.), they say "Used by: None"... however, when I came across a file I wanted to replace later today, I went to delete that and realized:
A - While it IS used in an active/approved email, it still said "Used by: None"...
B - When I deleted it (again, this is fine, cause I was going to delete it anyhow today), I went back to the email, and the image is still there. It didn't get stripped out.
This leads me to think that when you delete out of the Design studio, once they're integrated into a campaign, the images won't be stripped out (unless you manually delete them while editing the email.)
**Separately, I believe that when you "update/replace" an image, this action replaces the image everywhere that image is used... though I haven't had great luck with that feature, and tend to just upload a brand new file and use that, though I can certainly imagine scenarios where the update/replace feature would be handy and may work just fine for others!**