I have a feeling I'm just not entering the right search terms....but, I can't find an app that does this: I want to have the ability to pin or "stick" a message to the top of my messages list, as a reminder to myself to follow up/reply later. I don't want to 'lose' the message as it's moved down the messages list because I've received a lot of messages after that one.
Can someone point me to an app like this?