What is the limit for sending messages from iMessage account?

Hello everyone, does anyone know if there is a limit on sending messages from one iMessage account? Is the limit based on the device or the number of iCloud accounts you have?

From what amount of messages I will be banned ?

Unlike Google, there isn't any defined public limit for Apple's iMessages.
It all goes under their "Apple’s Fair Use Policy". So whatever they see fit really.
You may need to do some A/B testing on throwaways