Voiceover Letter/Playing With

Basic Trope: A letter's contents are spoken by its sender, despite being far away.

Straight: Alice gets a letter from Bob, who lives in the next state, and his voice speaks the words on the page as Alice reads them.
Exaggerated: Alice gets a letter written by Bob, Carol, and Daniel, and their voices all speak in union.
Downplayed: Only the last few words are spoken.
Justified: The paper used is an experimental type that lets you record your voice.
Inverted: Alice reads a letter from Bob, despite him being right next to her.
Subverted: It turns out Bob was standing right behind Alice the whole time.
Double Subverted: ... and then it turns out that was an imposter of Bob.
Parodied: Bob's words do not at all match up with the letter.
Zig Zagged: Though letters appear often in the series, not all of them are read by the sender.
Averted: The letter isn't read by Bob.
Enforced: "We need a device to make sure the audience understands the message!"
Lampshaded: "Where is that voice coming from?"
Invoked: ???
Exploited: ???
Defied: ???
Discussed: "Oh, a letter from Bob! I wonder when his voice will start talking..."
Conversed: "You ever wonder why letters on TV shows are always read by their senders?"