”Let You Be Right” was released on May 10, 2018. It was released as a stand alone single it was intended to be on the album Treat Myself but did not make the final cut alone with other tracks "Can't Dance", "Treat Myself" & "All the Ways". Althought it uses explicit language it is not marked as explicit on iTunes and other streaming platforms
Meghan Trainor had been searching for a producer to create her upcoming third major-label studio album Treat Myself (2020) with, when she conducted the first session for it with songwriter Jacob Kasher Hindlin. He suggested that they work with then-unknown producer Andrew Wells. Trainor, who was expecting the session to go "really bad or really awesome", ended up writing "Let You Be Right" with them, and knew Wells "was the one". Wells produced the song, and ended up collaborating with Trainor on four songs for her second EP, The Love Train (EP) (2019), two of which were co-written by Hindlin. "Let You Be Right" was Wells' favorite song on Treat Myself, and he suggested that the singer release the song.
Trainor previewed the song on her Instagram account, accompanied by a video of a spinning disco ball, on May 8, 2018, two days before the official release date. It was released on May 10, 2018, accompanied by "Can't Dance". About her decision to release two singles on the same day, Trainor said "My team and I talked about it, and I just can't wait any longer to share the songs on this album. I wanted to drop two today instead of one." In the United States, "Let You Be Right" was serviced to adult contemporary radio on May 11 and contemporary hit radio on June 8, 2018.
In a January 2020 interview, Trainor was regretful about releasing the song as a single, stating that her label, management and team were "really confident" in it, and radio DJs were telling them it was the only song off Treat Myself that "[would] work". So she agreed: "Alright, I'll do what you all want to do", but concluded "that shit was wrong" following its commercial underperformance. As Trainor rewrote the album four times, to make it a pop record that feels relevant in an era when hip-hop reigns, "Let You Be Right" failed to make the final cut.