So, i did see this question asked a few times before, but it seems that everybody had different results / answers.
SO thats why i am going to make this thread for the definitive answer!
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So which option does what?
Confirm delivery / read seems like the setting that you change to flag emails you SEND so that your RECIPIENT's client tells you when the message has been read.
Send Receipts seems like the setting you enable to let others know when you have read your messages.
Still, that's just my speculation! There are different forums over the net that clam different things when it comes to these settings, so can somebody (with credentials / know how) set this straight?