I think I will be forwarding funny animal videos to Jake on instagram for all time but the idea of them being delivered to no one is this weird minor detail that is just so hard.
That happened to me too. Then I switched writing in "notes" and eventually switched to https://dayone.me/ which has a webapp as well as mobile app, so it's easy for me to write on any device. It was less disheartening not to see that "delivered, not read" on messages.