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Write a letter to yourself, ten years from now.

A decade is a long time. Write something that lasts.

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Sealing on June 23, 2026. Delivering on June 23, 2027 at 09:00.

By submitting, you confirm you are 18 or older and agree to our Terms and Privacy Policy. Your letter is encrypted at rest.

10-year letter

A decade is just long enough.

A decade is long enough that the version of you who reads this letter will be meaningfully different from the version who writes it. The career you have today might not be the career you have then. The city you live in. The people you spend time with. The thing that's keeping you up at night will probably be something you can barely remember.

But some things will be unchanged. The values that matter most to you. The relationships you've worked hardest to keep. The shape of your handwriting (or, in this case, your typing). A ten-year letter is a way of writing down the parts of yourself you hope still exist after a decade of life happening — and giving future-you a chance to recognise them.

It's also the most common horizon people pick for letters like this — long enough to feel meaningful, short enough that you'll almost certainly still be checking the same email inbox. We support up to 50 years if you want to write further out, but ten is the sweet spot.

Write it once. Forget about it for a while. We'll deliver it on the day you chose.

How it works

Three steps. No account.

Simple by design. Built so anyone can use it without signing up.

  1. 01

    Write your letter

    Tell your future self anything. A goal. A memory. A promise. Plain text only — no formatting, no attachments.

  2. 02

    Confirm your email

    We send a one-time confirmation link. Click it within 7 days and your letter is scheduled.

  3. 03

    Receive it on the day

    We'll be there on the day you chose. Encrypted in the meantime, and only you can read it.

Why this tool exists

Some letters are worth waiting for.

TimeCapsule is a free tool from the team at Vaulternal. We build software for delivering files to the right person at the right moment — under conditions you set in advance.

Most of our work is on conditional access continuity — long trips, hospital stays, planned handovers, and similar situations. This tool is a simpler version of that idea, and it's just for you. No account, no fee, no catch.

See what else Vaulternal builds

Questions

Frequently asked

Is it really free?
Yes. No credit card, no account, no upsell. We're a venture-backed company building a separate paid product (Vaulternal). This tool is our gift to anyone who wants to write to their future self.
Will my letter actually arrive?
Your letter is safe with us. We're a venture-backed company with the infrastructure and runway to be here for the long haul. Your delivery date is locked in, your letter is encrypted at rest, and you'll always be able to cancel or download it from your manage link.
How is my letter protected?
Your letter is encrypted at rest using AES-256-GCM with rotating keys. Your email address is also encrypted, and we only store a one-way hash for rate limiting. Plain-text content is never written to logs.
Can I edit or cancel?
You can edit your letter for 14 days after confirming. After that, you can still cancel any time before delivery — but the content is locked to keep the original intent.
Why do you ask me to confirm by email?
Confirmation prevents spam. If your inbox doesn't receive the link, the letter doesn't get scheduled. The email is purely functional — no marketing, no cross-promo.
Can I send to someone else?
Not in this tool. TimeCapsule delivers letters only to the email address you confirmed at writing time. If you need a file to reach a trusted person under conditions you set in advance, that's exactly what Vaulternal (the paid product) handles.

More from Vaulternal

Need a file to reach a trusted person, on your terms?

Vaulternal handles conditional access continuity — making sure a trusted person can reach an important file when conditions you defined in advance are met. Long trips, hospital stays, planned handovers — same care, same encryption.

Learn about Vaulternal