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A letter to myself, sent forward.

Private. Encrypted. Yours alone, on a day you choose.

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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.

Letter to myself

A quiet conversation with the only person who was there.

A letter to yourself is private in a way that almost nothing else is. It's not for an audience. It's not for posterity. It's a quiet conversation with the only person who knew exactly what you were thinking when you wrote it: you, this version of you, today.

Some people write to their future self once, on a meaningful date — a birthday, a year-mark of something, a new year. Others write whenever they feel the need to capture a version of themselves they don't want to forget. There are no rules and no rituals required.

The simplest way to start is to imagine the day the letter arrives. Where might you be? Who might you be with? What would you want past-you to have noticed about right now? What would you want them to remind future-you about?

Once you submit, we'll send a confirmation link to your email. Click it to schedule the letter. It will be encrypted, untouched, and delivered on the day you chose. No one else can read it. No account is required. It's free.

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