Messenger is an online chat service created by Meta (Facebook, formerly). It allows people to quickly exchange text messages as well as send photos and audio files and other media to each other. The software is powered by Facebook, and it collects data of the audience of this social media to operate.
The initial logotype of the then-titled Facebook Chat was the simple watermark with the typical chat icon made of blue rectangle. This logotype had a distinctive wavy line in the center of the rectangle.
In 2013, the Messenger icon was given a bright blue circle in place of the old-school rectangle.
In 2018, the Messenger team presented this one. It looked similar to the 2013 version, but it was a bit squeezed, and both the circle and the wavy line looked bolder and rounder.
The circle in this following version gained a violet gradient, but nothing else really changed.