Why can't we have the same anti-spam feature that WoW has?

[Sacred-Oblivion]

they implemented this during early cataclysm... they may have taken it out when the whole panda expansion came out, but definitely was the case then, was trying to whisper friends while starting on twinks.... yeah nope. It got to the point where a lot of them were botting to 10 and took the same path route. Hell I remember making a character in northshire (starting human location) and seeing them take the exact path all the time to level... it was funny see a good amount vanish after the 1st or 2nd quest.

Are you sure you weren't playing on a Free Trial account at that time? The trial accounts have certain limitations, and iirc the inability to send tells is one of them.