A forbidden story, unfolding one sealed letter at a time.
Delivered to your door, twice a month, all year long.
Imagine a sealed envelope arriving at your door every two weeks. Inside: a letter — beautifully written, aged paper, a broken wax seal — from Lord Ashworth to Miss Caldwell. Two people who absolutely should not be writing to each other.
Over twelve months, 24 letters. A slow-burning forbidden romance — laced with longing, stolen moments, and heat you can feel through the page — unfolding in real time, in your hands, at your pace.
Select your story, choose your start date, and tell us where to send the letters. Perfect for gifting — just use the recipient's address.
Every two weeks, a sealed envelope arrives. Inside: a beautifully designed letter on aged parchment, plus additional inserts — clippings, cards, keepsakes — bringing the world to life.
At the end of each letter, you vote on how the story unfolds. Your choice shapes the next letter. No two subscribers' stories are exactly alike.
A multi-page correspondence on cream parchment, written in period voice. Dense with tension, wit, and longing.
A period newspaper clipping, calling card, telegram or social notice — deepening the world of the story.
A small illustrated botanical or decorative card. Something beautiful to keep, collect, and display.
Your path for the next letter. Choose your journey, and the story bends to your decision. Two weeks later, the consequence arrives.
Lord Ashworth writes first. He probably shouldn't have.
You will think me exceedingly bold for writing to you at all. You may be right. And yet here I find myself — at half past eleven in the evening, with the fire burned to embers and my better judgement apparently retired for the night — setting pen to paper and addressing it to you.
I shall not pretend this letter requires any practical cause. You know as well as I do that the matter of the disputed boundary wall could have been resolved through our respective solicitors, as propriety demands. I chose not to resolve it that way. I suspect you already know why, and I suspect that knowledge amuses you rather more than it ought.
We have been neighbours for three weeks. In that time you have twice corrected my Latin — correctly, I will admit, though I found the manner of it insufferable — argued with my steward about the drainage of the east field in terms that suggested you understood the matter better than he did...
At the end of every letter, two paths. Your vote shapes the story. Two weeks later, the consequence arrives at your door.
Miss Caldwell replies with cool composure — and a single, devastating line that leaves him sleepless.
She does not reply at all. But the following morning, she rides past Ashworth House. Slowly.
Which would you choose?
Founding members lock in a discounted rate for the full year. Limited places — once we reach 100 subscribers, this pricing closes.
I would absolutely subscribe to this. Take my money.
— Early reader, r/RomanceBooks
We launch when we reach 100 founding subscribers. Join the list — no payment taken until we're ready to ship your first letter.
No payment taken now. We'll contact you when we reach 100 founding members and you can confirm your subscription then. Unsubscribe from this list at any time.
Letters Under Seal is spicy romance — think Kleypas or Chase rather than outright erotica. The heat builds gradually across the year. All subscribers must be 18+.
We launch when we reach 100 founding subscribers. You'll receive an email confirming the launch date and your first mailing. You can also choose a custom start date — perfect for gifts.
Absolutely. Just enter the recipient's mailing address at checkout. We'll send you a printable gift card to present in person. The letters will go directly to them.
Yes — every subscription starts at Letter No. I, regardless of when you join. You'll receive the complete 24-letter experience from the start.
We'll resend it, no questions asked. Every subscriber's letters are tracked and we guarantee delivery.
Monthly subscribers can cancel at any time. Annual subscribers are billed for the full year upfront at the discounted rate — no refunds after the first letter ships, but you can pause delivery.