When someone uses text messaging or instant messaging to deliver a one-
way communication. Even if you respond immediately, there is
little chance to expect a reply -- the postcarder has already put their
phone away or closed the instant message window.
Oh
boy, Jennifer is postcarding again. I texted her back immediately and got "Delivered", but she hasn'
t even "
Read" my response. She is just happy to have delivered her postcard.