How do I ask a friend to stop sending me so many random photos everyday?

I have a friend who tends to send me 1-10 random photos she takes a day (like some are so blurry I can’t even tell what the photo is of and others are of just the ground or ceiling) and I find it really annoying. I’ve tried just ignoring the messages or leaving her on delivered but that doesn’t stop her. I don’t want to block her because she’s a good friend, but I am getting very annoyed with her over this. How do I nicely ask her to stop sending me so many random photos?

How do I ask a friend to stop sending me so many random photos everyday?
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