The part of a handwritten letter people worry about is what to say. The part that actually derails it is smaller and far less romantic: a missing verification code, an envelope that gets kicked back for postage, ink that bled through before anyone got to read the second page.
If you’ve signed up for a Handwritten Future Letter, the writing is the easy part. This is the other part — the part where an actual piece of paper has to survive a trip through the mail, sit somewhere for up to two years, and come back out sealed on the other side. Here’s exactly how to get that part right the first time.
Why the Handwritten Letter Has to Travel Twice
A Handwritten Future Letter ($19) isn’t a metaphor. It’s a physical object that makes two trips — once from you to us, once from us back out to you or to whoever you addressed it to — with months or years sitting quietly in between. Every handoff in that chain is a place a letter can go sideways: lost in a stack of unmarked mail, returned for insufficient postage, or delayed because nobody could tell it was supposed to stay sealed.
None of that is dramatic. It’s just logistics — the unglamorous part of a keepsake that never makes it into the photos. Getting it right isn’t complicated, but it does take five extra minutes you weren’t planning on spending. Those five minutes are the difference between a letter that arrives sealed on your delivery date and one that doesn’t arrive at all.
When to Write It (and When to Mail It)
You can write it the same day you sign up or six weeks later — there’s no deadline on the writing itself. What matters is your delivery date, which you choose at signup and which can land anywhere from one month to two years out. Once your letter reaches us, we log it and seal it into storage until that date, untouched.
The one real timing rule: don’t mail it the week before you want it back. Give it a little runway. If your delivery date is only a month out, get the letter in the mail within the first week or two so there’s time for it to reach us, get logged, and get properly stored before we turn around and send it out again. If your delivery date is a year or two away, the runway barely matters — just don’t let “I’ll mail it soon” quietly turn into never mailing it at all.
What to Pack: The Checklist
- The letter itself, handwritten. Any pen, any paper — we don’t require anything specific. If you want it to hold up cleanly over months or years in storage, our guide to pens and paper covers what actually matters. Short version: heavier paper and ink that doesn’t fade beat whatever’s cheapest.
- Your verification code, on the back of the envelope. This is the single most important line you’ll write that isn’t part of the letter. It’s how we match your physical envelope to your online order. You’ll get it by email right after you pay.
- Your name and return address, also on the envelope. Not just inside it. If the code is smudged or missed entirely, this is the backup we use to match your letter to your account — and it only works if the name matches what you used at signup.
- A second envelope, if you want one. Plenty of people seal their letter in its own envelope first, then mail that sealed envelope inside a second, larger one with the verification code written on the outer envelope only. We open the outer envelope to log and store it. We don’t open the inner one — that stays sealed, yours, until your delivery date.
- Correct postage for the size. USPS letter rate covers envelopes between roughly 3.5 x 5 inches and 6.125 x 11.5 inches, no more than a quarter-inch thick. Go outside that — a square envelope, a stiff double-envelope setup, extra pages that add weight — and it gets reclassified and costs more to mail. Worth weighing it or asking the counter clerk before you guess.
- Nothing the letter shouldn’t hold. No cash, checks, or gift cards; no illegal substances or hazardous materials; nothing the USPS itself prohibits in the mail. It sounds obvious until you remember people genuinely try to mail pressed flowers, keys, and the occasional locket. If you want to include something small and flat, email us first and we’ll tell you if it’s a problem.
Once it reaches us, your letter goes into climate-controlled, fire-resistant storage — sealed, logged against your delivery date, and untouched until then. Paper genuinely doesn’t do well with big swings in heat and humidity, which is part of why the Library of Congress’s own preservation guidance is blunt about not storing paper you care about somewhere temperature and humidity swing hard — a garage, an attic. We don’t either.
Prompts, If You’re Staring at a Blank Page
The checklist above assumes you already know what you’re writing. If you don’t yet, here are a few places to start. Pick one. You don’t need all eight.
- What does today actually look like — the mundane version, not the highlight reel?
- What’s worrying you right now that you suspect won’t matter by the time this arrives?
- What’s true about you today that you want on record before it changes?
- Who’s in your life right now who might not be, by the time this letter opens?
- What decision are you sitting on, and what does your gut say before anyone else weighs in?
- If you’re writing to someone else: what do you want them to know that you’ve never quite said out loud?
- What’s a small, specific detail from this week you’ll otherwise forget by next year — a song, a smell, a joke that killed at dinner?
- What do you hope is different when this letter reaches its reader? What do you hope is exactly the same?
How Hold My Letter Makes the Rest Easy
Everything above is the part you control. Here’s what we handle once your letter reaches our PO Box: we log the verification code, seal your letter into storage, and hold it — climate-controlled, fire-resistant, unread — until your delivery date. On that date, we mail it back out with tracking, still sealed. We go into more detail on the full custody chain in We Never Open Your Letter, if you want the longer version.
The Handwritten Future Letter is $19, one time, and works for a letter to yourself (/letter-to-me) or to someone else (/letter-to-someone) — any US address, delivery date anywhere from one month to two years out. If you’d rather skip the mail-in step entirely and type your letter online instead, the Digital Future Letter is $9 — we print it, seal it with wax, and mail it on your date without you ever touching an envelope. Both end the same way: a sealed, physical letter in a mailbox, on the day you chose. If you want the fuller walkthrough of what actually shows up, we wrote about that too in What Hold My Letter Actually Sends You.
Frequently Asked Questions
What happens if I forget to write the verification code on my envelope?
We’ll try to match it using the name on the envelope against the name on your account, but that only works cleanly if the two match exactly. Write the code if you possibly can — it’s the fastest, most reliable way to make sure your letter finds its way back to you.
Can I put my letter inside a second, sealed envelope for privacy?
Yes. Seal your letter in its own envelope, then mail that inside a second one with your verification code written on the outside. We only open the outer envelope to log and store it — the inner one stays sealed until your delivery date.
Is there a deadline for mailing my letter after I sign up?
Not a hard one, but don’t let it sit. Mail it with enough runway before your chosen delivery date that it can reach us, get logged, and get stored before we turn around and send it back out — that matters most if your delivery date is only a month or two out.
What can’t I include in the envelope?
No cash, checks, gift cards, or anything monetary; no illegal substances or hazardous materials; nothing the USPS itself prohibits in the mail. If you’re unsure whether something small and flat is fine to include, email us at support@holdmyletter.com before you send it.
What if I want to send a handwritten letter to someone else instead of myself?
Same process, different destination. Sign up at /letter-to-someone, write and mail your letter the same way, and we’ll mail it to the recipient’s address on your chosen delivery date instead of back to you.
Write the letter, write the code on the envelope, and let the rest be our problem.