I want to get a "read receipt" of a text I'm sending to my ex husband. He has an Android and so do I. He has been getting very hostile and when I opened up the last text he sent me, I saw a pop-up that said "a read receipt has been sent to the sender." So I know there's a way for me to get a read receipt of the text I'm need to send to him, but I can't figure it out. I tried the whats app but it isn't pulling his information in because evidently he does not have that app. So he has to be doing this a different way. I can't find anything on Google please help me I need to send something now and I need to know that he got it.