Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.11 | 手紙 | 5:07 | THE BOOM | 2 | THE BOOM | Album + Compilation |
| Sony Records (Japanese imprint) | SRCL-3751 |
| 1.14 | 手紙 | 5:09 | THE BOOM | Singles+ | THE BOOM | Album + Compilation |
| Sony Records (Japanese imprint) | SRCL-4467, SRCL-4468 |
| 1.14 | 手紙 | 5:08 | THE BOOM | STAR BOX EXTRA (初回出荷限定盤) | THE BOOM | Album + Compilation |
| SMEJ (1999–2015 imprint used by various Sony Music Entertainment Japan companies) | MHCL-52 |
| 1.11 | Tegami (La carta) | 5:07 | THE BOOM | Shima Uta –Grandes Éxitos– | THE BOOM | Album + Compilation |
| Columbia (owned by Sony Music Entertainment, worldwide except JP; formerly owned by CBS between 1938–1990 within US/CA/MX) | 2-509564 |
| 1.11 | TEGAMI (LA CARTA) | 5:08 | THE BOOM | SHIMA UTA –Grandes Éxitos– | THE BOOM | Album + Compilation |
| Sony Records (Japanese imprint) | SRCL-5427 |
| 1.17 | 手紙(オリジナル・ヴァージョン│Bonus Track) | 5:06 | THE BOOM | TROPICALISM-0° | THE BOOM | Album |
| GT music (Japanese imprint) | MHCL-610 |
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