Try starting a city in bronze age and advance it slowly through the early ages. You will get many wonderful messages from people desiring your assistance with their great buildings.[.QUOTE]
I've already done that. Twice. Starting from the Stone Age, actually. (Is it even possible to start in the Bronze Age?) And I really haven't gotten many such messages. Nor sent any.
The app allows you to easily send messages to your friendslist, neighborhood or guild. The new players do know how to use it, as well as how to attach trades and GBs. They are quite good at it.
I know how to attack trades and GBs, but I don't see any "Send to All Friends" or "Send to All Neighbors" buttons. I also know how to delete a message thread I'm not interested in.
-----
When I first saw this thread, I assumed the spam messages being referred to were commercial messages having nothing to do with the game. Advertizing porn websites, cheap prescription drugs from Canada, specials on airline tickets, make $$$ from home, tell us your opinions on politics, etc. I assume these kinds of messages are already not allowed, and would get someone kicked from the game. And rightly so.
But a person sending "I'm offering Biolight for AI Data" to all his friends - including ones in the Middle Ages - is not really getting his message to the right people. That's not the way to effectively trade.