What they feel when they receive it
Glanced at in 0.3 seconds. The thumb scrolls past before the warmth registers. Nothing personal was risked, nothing personal was received.
Better — but requires headphones and a quiet moment they may never find. Still no face. Often unplayed for days.
They see your eyes. They hear your tone. Receivers forward it. Some watch it twice. That's word-of-mouth you didn't have to plan for.