The Three Writters - 4:00 am, who could it be? Noj???

Texting.
A god-send to society. Now you can receive without a COD; we send you a message; sincere, inquisitive, thoughtful, and at times polite - "at times, personal disposition may weigh".
(Directorial (as in dictionary) response: an answer or reply, as in words or action).
To the contrary, at times, texts (or lack there of) may belie the aforementioned definition.