Zamen | زامن
This tweak withholds read receipts from your iMessage recipients until you're ready
Admittedly, I have a love/hate relationship with read receipts. I like getting them, and I don't particularly mind sending them to people, but sometimes I want to read someone's message in peace without notifying them until I'm ready to deal with the consequences.
You could go into Settings and disable read receipts temporarily, but this becomes more of a nuisance than it's worth. Fortunately, a free jailbreak tweak called Delay Read Receipts (iOS 10) by iOS developer HiDan helps by preventing read receipts from getting sent to your recipient until you're ready.
The tweak works by letting you to delay read receipts until you take specific actions in one of your iMessage conversations.
You'll find a new preferences pane in the Settings app where you can choose what action triggers a read receipt to be sent to your recipient: