It was released through Blue Vinyl and published by Dreamus on December 10, 2019.

This is her first release under her new label, Blue Vinyl, after leaving JYP Entertainment in September 2019.

[2] Every Letter I Sent You was met with generally positive reviews from music critics and debuted at number two in South Korea, selling over 35,000 copies.

[3] Every Letter I Sent You is Yerin Baek's first studio album released after the establishment of her independent label Blue Vinyl.

[5] All tracks are written by Yerin Baek; "Point" co-written by Loopy.