So, I tried sending two pictures to my email from my iPhone 4. One went through to my email, but the other went through as unknown, so it wouldn't send. (the send bar was almost full, but never filled the whole way) I tried deleting the text, hoping that it would quit trying to send it, but everytime I close out my messages and go back into it the message pops up again. I've deleted it multiple times and it keeps showing up. What do I do??