Messenger marketing has evolved from its inception as a communication channel, to being open for businesses to message every single person that’s ever opted in, including anyone that has ever commented on a Facebook post, to a more closed platform, today, where you have limitations on the type, promotional vs non-promotional, and frequency, you can message your list.

Here's a detailed look at the past, present, and future of Messenger marketing, and what you need to do about it.