TON Message is a method of interaction in the Free TON blockchain.
Messages are divided into external and internal. Smart contracts are called and deployed from the outside using incoming messages. Inside the blockchain, TON Message is used to connect smart contracts.
In addition to incoming messages, there are outgoing messages. External outgoing messages are events created by smart contracts to communicate with the outside world.
To improve the performance of Free TON, the external messaging mechanism is currently being redesigned.