Letters I Haven't Written, the seventh album by British singer-songwriter Gwyneth Herbert,[1] was released on 12 October 2018.

[2] It was produced at Rockfield Studios, Monmouth and, like Herbert's previous album The Sea Cabinet, was crowdfunded.

[1][6] Reviewing the album for Jazzwise magazine, Peter Quinn said that "Letters I Haven't Written is by turns moving, thrilling and entrancing".

[6] Music from the album was previewed in a touring show which Herbert and her band performed at UK venues in 2017.

Herbert wrote "Not the Kind of Girl" for a screening, in 2010, of Marion Davies’ 1928 silent comedy classic The Patsy, at BFI Southbank's Birds Eye View Film Festival.