[kevincox]

Well there is some cost to send a message. These are being sent via Canada Post. The problem is that the cost isn't high enough.

[madsbuch]

I think you misunderstood: The reason why modern societies need legislation on emails and not on traditional post is because there is a cost associated with traditional cost.

You'd probably see the same rules if you could send 20.000.000 letters via Canada Post in 30 seconds for the cost of the servers compute.

[kevincox]

But clearly cost isn't enough. People are getting spam that they don't want.

You could raise the cost, but that only reduces the problem and inflicts cost on legitimate mail sending. It is clear to me that society does need legislation on physical mail. So your correlation doesn't make sense.

[flowerbreeze]

I'm guessing the cost isn't enough, because it works. Maybe tax commercial letter stamps by 50%, but keep private letters as is?