Have "emails opened" counted only once (or once per day?)
When a client opens an email, depending on their software, it will show as being opened multiple times. I suggest having LD filter out the duplicate openings. Ex: I sent out 129 emails, and it says 755 emails have been opened. One client alone shows that he opened an email 35 times in 5 minutes. (I know that LD can't control it, but figured they might be able to filter it)