@metadavid
Fair…my definition is non-sensic, no context, or out of context messages (in any form of communication).
IE, you send me a pic of a broccoli at 3am with no context or background.
I think there’s a good number of us that consider the latter spam.
Not sure how you would be able to develop an algorithm that would combat that, so I can understand it’s easier to programmatically solve for your definition.
Only caveat with that is people tend to think optimistically and want to assume they didn’t get a reply because the receiver didn’t see it, got busy, etc. 🙂