> "One reason iMessage is less of a total cesspit than SMS is that the ecosystem is closed"
I don't think that's the main reason. iMessage is available on macOS, so by definition isn't that tightly locked down. Anyone can automate/script the desktop app to try and fire off as many messages as you like.
But of course that won't really work because Apple has security algorithms in the network that detect unusual behaviour. Did that user/device suddenly start to fire off 1000 messages to users they've never contacted before? Activity flagged, user blocked.
There are also functions in the iMessage app itself to block and report unwanted/inappropriate/spam messages. So even low-volume spammers will not get away with it for long.
Besides, in the UK, SMS spam is almost non-existent in my experience. Unlike in some other countries I've visited where it's a huge problem. That's not because the ecosystem is any different - it's because there's strict rules that are actively enforced (see TPS: www.tpsonline.org.uk).
> Besides, in the UK, SMS spam is almost non-existent in my experience.
This is not my experience. Perhaps 3-5 years ago was the peak of SMS spam, but I still regularly (1/week minimum) get one of the various "package delivery" | "tax refund" | "diesel emissions" scam/spam texts.
I don't think that's the main reason. iMessage is available on macOS, so by definition isn't that tightly locked down. Anyone can automate/script the desktop app to try and fire off as many messages as you like.
But of course that won't really work because Apple has security algorithms in the network that detect unusual behaviour. Did that user/device suddenly start to fire off 1000 messages to users they've never contacted before? Activity flagged, user blocked.
There are also functions in the iMessage app itself to block and report unwanted/inappropriate/spam messages. So even low-volume spammers will not get away with it for long.
Besides, in the UK, SMS spam is almost non-existent in my experience. Unlike in some other countries I've visited where it's a huge problem. That's not because the ecosystem is any different - it's because there's strict rules that are actively enforced (see TPS: www.tpsonline.org.uk).