I does sound like they made a HTTP GET request have side effects.
I suspect that’s exactly what they did. And then they “solved” it with a Captcha. Conveniently I bet human unsubscribes also dropped when that was instituted.
I suspect that’s exactly what they did. And then they “solved” it with a Captcha. Conveniently I bet human unsubscribes also dropped when that was instituted.