Hi anonymous,
Welcome to The Unsent Letter Mailbox: NYC’s anonymous letter exchange.
The Unsent Letter Mailbox began in New York City in February 2024, offering a home for unsent letters, anonymous confessions, unspoken thoughts, and raw truths.
Here’s how it works: You write an anonymous letter, drop it in the mailbox, and in exchange, you get to read one written by someone else. Hundreds of New Yorkers have participated—leaving behind love letters, regrets, unsent goodbyes, secret confessions, and fragments of stories never meant to be sent.
Why participate?
Because in a world of curated feeds and fast replies, sometimes the deepest experiences remain unspoken.
Time Capsule Challenge
2025 is quickly coming to a close, and these last few weeks are a chance to look at oneself and take note of who we are becoming. A letter to your future self is an opportunity to be both kind and accountable. Submit by December 31st, 2025.
We'll email it back exactly a year from now... on December 31st, 2026.
Concept by: Bonnie Blue Edwards
an anonymous unsent letter written as part of a public art project in NYC
A handwritten letter titled 'Anonymous Unsent Letter' with a drawing of a moon and stars, and three purple hearts at the bottom left corner.
Not everything gets sent. Some things live in the scrapbox.
The letters that stay unsent don’t disappear—they live on in the Scrapbox, our newsletter of unfiltered thoughts, messy drafts, and handwritten confessions. Subscribe to the Scrapbox to read anonymous letters, get exclusive writing prompts, and be part of our growing community.
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Support the mission. Fund the unheard. Because silence doesn’t change the world—words do.