It's a message you scream out an open window hoping it will be heard by the intended party.
Meghan Markle claimed she left a Voice Note for Billie Eilish so she would send some merch for a 15 year old wildfire survivor. The giddy Markle was trying to distract from her distaster tourist reputation but again made it worse.
I left a Voice Note for her weeks ago and I'm waiting for a response.