Sorry, not sure what you are asking? If the person has Read Receipts turned on on their Messages app, then you will receive a notification (courtesy of them) that the message has been read. If they turn it off, then you won't receive a notification indicating that the message has been read.
Since this is a completely voluntary setting that the user can turn on as a courtesy, not sure what your question regarding proof as to whether it is off or on is? Can you clarify what the issue may be?
GB
Yes I know how they work. However this person tells me that they are still on and it has been a days worth of constant messaging and all the messages I send only say delivered. And I can still scroll back and see the last read message about 40 messages ago (assuming this is when they turned them off ) I just want to verify that there is no way that could be happening because of a technical problem and that they simply turned them off and didn't notify me.
How to know for sure if someone's read reciepts are off?
