A Promise Letter — A Commitment in Your Own Words
Make a promise to someone you love — in writing, in your own hand, with a date attached. We deliver the letter on the date you set.
Why This Works
We make a lot of promises and document very few of them. The vows we make at a wedding mostly live in the videographer's footage that nobody watches again. The promises we make to our kids about what kind of parent we'll be, the promises we make to ourselves about who we'll become — almost none of them get written down. They live as intentions, and intentions decay.
A promise letter is a different kind of commitment. You write today, by hand or digitally, the specific promise you're making and to whom. The version of you who's making it. What it would look like if you keep it. What it would look like if you don't. Then we deliver the letter on a date you choose — an anniversary, a birthday, the date the promise was supposed to be fulfilled by — either to the person you made it to, or back to yourself for accountability.
The form is most powerful for promises that are easy to break and hard to keep: a promise to your partner about how you'll show up for them in this next year, a promise to a child about something you want them to know you committed to, a promise to yourself about how you'll handle a recurring failure mode. The letter doesn't make breaking the promise impossible. It just makes it harder to forget you made one.
How It Works
Three simple steps. One beautiful moment, later.
Write Your Letter
Pour your heart onto paper. Use our Letter Helper if you'd like prompts. Pick any delivery date you want — from one month out to two years out.
We Keep It Safe
Mail your sealed letter to our PO Box. We store it in a climate-controlled, fire-resistant safe — untouched, unopened, waiting.
We Deliver It
On your chosen date, we mail your original, handwritten letter with tracking. Your words arrive exactly when they're meant to.
Your letter is in safe hands
How We Keep Your Letter Safe
You're trusting us with something irreplaceable. Here's what we do about that.
Climate-Controlled & Fire-Resistant
Letters are stored in climate-controlled, fire-resistant safes — not filing cabinets or cardboard boxes. We treat every letter as irreplaceable, because to someone, it is.
Tracked on Delivery
Every letter ships with an active tracking number, so you (or the recipient) know exactly when it's on its way.
Move? Just Email Us
If your address changes before your delivery date, email us anytime and we'll update your file. Your letter follows you — no extra fee.
Your Words, Always Safe
If Hold My Letter ever closes, every stored letter is immediately mailed back to the sender's return address. No exceptions.
Simple Pricing
One letter. One delivery. One beautiful moment when it returns.
Write now, deliver later
Type your letter online. We print it on cream stationery, seal it with wax, and mail the physical envelope on any date you choose — from one month out to two years out.
Digital Future Letter
One-time payment
- Type on our site, no handwriting required
- Printed on cream stationery, sealed with wax
- Mailed as a physical envelope on your chosen date
- Any custom date from one month to two years out
You write it. You mail it in. We mail it back.
The original Hold My Letter experience. Handwrite your letter, seal the envelope, and mail it to our PO Box. We store it in a climate-controlled, fire-resistant safe until your chosen delivery date — then send it back with tracking, still sealed.
Mail-in Handwritten Letter
One-time payment
- You handwrite it, you mail it in
- Stored sealed in a climate-controlled, fire-resistant safe
- Mailed back to you with tracking, still sealed
- Any custom date from one month to two years out
🇺🇸 Currently available for US addresses only.
Questions Worth Answering
Everything you need to know, answered plainly.
What happens to my letter if Hold My Letter goes out of business?
What if I move before my letter is delivered?
How do you store the letters?
What kind of promises work for this?
Should the promise letter go to the recipient or back to me?
Is this the same as a vow renewal?
Ready to Write Your Letter?
It only takes 20 minutes. The moment it lands will be worth years.