This option is only available in iMessage-enabled conversations, but that's to be expected. Conversely, when you have Read Receipts turned on for everyone, you can toggle 'Send Read Receipts' off for this one individual contact. When you have Read Receipts turned off for everyone, but want this one person to be able to see that you've read their iMessages, then just toggle this on. If you have Read Receipts turned off for everybody, it should be off. From here, tap the 'i' (info) button in the top right, then you'll see a new option labeled 'Send Read Receipts.' If you have Read Receipts turned on for everybody, this button should be toggled on. Disabling (Or Enabling) Read Receipts for Individual ContactsДЇirst, open any conversation thread in the Messages app. It's a really simple process, so let's get started. As long as you're running iOS 10 or higher on your iPad, iPhone, or iPod touch, you can pick and choose which contacts have Read Receipts enabled or disabled. So if you weren't comfortable with one or two of your contacts knowing whether or not you've read their messages, you had to keep the feature disabled and miss out on Read Receipts for people you're a bit closer to. With iOS 9.3.5, as well as all of the versions prior to that, you had two choices when it came to 'Read Receipts' for iMessage - either on for everybody or off for everybody.

Imessage read receipts