I. Introduction
Every Letter I Sent You is the first studio album and the first double album by South Korean singer Baek Yerin. It was released through Blue Vinyl and published by Dreamus on December 10, 2019. It features 18 tracks, with 'Popo (How deep is our love?)', '0310' and 'Square (2017)' serving as the album's triple title track. The physical album comes in a CD and LP format. This is her first release under her new label, Blue Vinyl, after leaving JYP Entertainment in September 2019.
II. Background & Release
Every letter I sent you is Yerin Baek's first studio album released after the establishment of her independent label Blue Vinyl. On December 10, 2019, the 'Popo (How deep is our love?)' and '0310' music videos were released on YouTube. The album consisted of three titles on a total of 18 tracks, was the result of Baek Yerin's four years from 19 to 22 years old, and was expected to be the most honest and elaborate album ever with her.
III. Tracklist
IIII. Disc 1
| Title | Writer | Producer | Length |
| Intro | Baek Yerin | Baek Yerin, Cloud | 1:42 |
| Rest | Baek Yerin | Baek Yerin, Cloud | 3:28 |
| Popo (How deep is our love?) | Baek Yerin | Baek Yerin, Cloud | 4:31 |
| can i b u | Baek Yerin | Baek Yerin, Cloud | 2:13 |
| Meant to be | Baek Yerin | Baek Yerin, Cloud | 3:01 |
| Mr.gloomy | Baek Yerin | Baek Yerin, Cloud | 3:35 |
| lovelovelove | Baek Yerin | Baek Yerin, Cloud | 4:34 |
| Bunny | Baek Yerin | Baek Yerin, Cloud | 3:57 |
| 0310 | Baek Yerin | Baek Yerin, Cloud | 3:58 |
IIIII. Disc 2
| Title | Writer | Producer | Length |
| Berlin | Baek Yerin | Baek Yerin, Cloud | 1:38 |
| Datoom | Baek Yerin | Baek Yerin, Cloud | 3:49 |
| Not a girl | Baek Yerin | Baek Yerin, Cloud | 3:49 |
| Newsong2 | Baek Yerin | Baek Yerin, Cloud | 3:35 |
| Amy | Baek Yerin | Baek Yerin, Cloud | 2:21 |
| True lover | Baek Yerin | Baek Yerin, Cloud | 3:20 |
| Point ft. Loopy | Baek Yerin, Loopy | Baek Yerin, Cloud | 4:13 |
| Square (2017) | Baek Yerin | Baek Yerin, Cloud | 4:21 |
| London | Baek Yerin | Baek Yerin, Cloud | 3:21 |
IV. Spotify Playlist
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V. Videos
VI. Teaser
Popo (How deep is our love?)
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0310 1
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0310 2
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VII. Official MV
Popo (How deep is our love?)
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0310
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Square (2017) (Lyric Video)
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VIII. Live Performance
Popo (How deep is our love?)
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0310
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Square (2017)
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VI. Concept Pictures
VII. Reception
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. The album received nominations for Album of the Year at 12th Melon Music Awards, while its single 'Square (2017)' won Best R&B/Soul award, and was also nominated for Song of the Year award.
VIII. Charts & Sales
VIIII. Weekly
| Chart (2019) | Peak Position |
| South Korean Albums (Gaon) | 2 |
VIIIII. Monthly
| Chart (2020) | Peak Position |
| South Korean Albums (Gaon) | 13, 79, 25 |
VIIIIII. Sales
| Region | Sales |
| SK | 35,365 |
IX. Awards
| Year | Award | Category | Nominated Work | Result |
| 2020 | 12th Melon Music Awards | Album of the Year | Every letter I sent you | Nominated |
| 2020 | 12th Melon Music Awards | Best R&B/Soul | Square (2017) | Won |
| 2020 | 12th Melon Music Awards | Song of the Year | Square (2017) | Nominated |
| 2020 | 22nd Mnet Asian Music Awards | Best Vocal Performance – Solo | Square (2017) | Nominated |
| 2020 | 22nd Mnet Asian Music Awards | Song of the Year | Square (2017) | Nominated |
| 2020 | 4th Korean Hip-hop Awards | R&B Album of the Year | Every letter I sent you | Nominated |
| 2021 | 10th Gaon Chart Music Awards | Song of the Year – December | Square (2017) | Nominated |
| 2021 | 35th Golden Disc Awards | Digital Bonsang | Square (2017) | Nominated |
| 2021 | 18th Korean Music Awards | Album of the Year | Every letter I sent you | Nominated |
| 2021 | 18th Korean Music Awards | Best Pop Album | Every letter I sent you | Won |
| 2021 | 18th Korean Music Awards | Song of the Year | Square (2017) | Nominated |
| 2021 | 18th Korean Music Awards | Best Pop Song | Square (2017) | Nominated |
