You’ve tried writing the important one as an email. A love letter. A long overdue apology. A letter to your future self. An “after I’m gone” note. You know exactly what happens: it sits in Drafts. Eventually you send it, and it lands between a Slack notification and a JIRA ticket. The format has killed it.
Letterbox is built for the letters email mangles. Each letter lives at a private URL. It’s locked behind a secret question only the recipient would know. It can be scheduled, sealed as “Open When,” or marked “After I’m Gone.” The recipient doesn’t need to sign up for anything. They open a link, answer your question, and read your letter on a page that looks like a letter \u2014 not an email thread.
Feature by feature
Letterbox vs Email.
| Feature | Letterbox | |
|---|---|---|
| Feels like a letter Email is a thread, not a page | ||
| Lives at a permanent URL | ||
| Secret-question lock | ||
| Scheduled delivery (pick a date) Some email clients have limited scheduling | ||
| “Open When…” sealed envelopes | ||
| After I'm Gone delivery | ||
| Dead Man's Switch | ||
| Private by default (end-to-end locked) Email providers scan content | ||
| Recipient can't accidentally reply-all | ||
| Photos / images | ||
| File attachments | ||
| Anonymous mode Email addresses reveal identity | ||
| Letters accumulate per person Email threads, not a letter collection | ||
| Voice letters | ||
| Shared letterbox (two-way) | ||
| Pricing | Free forever. Pro $99 one-time. Max $199 one-time. | Free (with ads + data scanning) or $6–12/mo for business. |
What each one is actually good at.
Letterbox is better for:
- Letter feels like a letter (page, not thread)
- Secret-question lock per letter
- Scheduled delivery
- “Open When…” sealed envelopes
- After I'm Gone / posthumous delivery
- Letters persist at a URL, not in an inbox
- No accidental replies/forwards
- Anonymous mode
- Works without the recipient having an account
- Dedicated private letterbox per person
Email is better for:
- Instant delivery
- Attachments (files, not just photos)
- Universal — everyone has email
- Easy to reply / thread
- Native to every device
- Great for logistics, receipts, coordination
Use Email if:
You need logistics, coordination, scheduling, a receipt, a confirmation, a work thread, or a group email. Email is the right tool when the message just needs to arrive.
Use Letterbox if:
You\u2019re writing the letter that actually matters \u2014 the one that’s been sitting in your head for months. The love letter, the apology, the goodbye, the one to your kid for when they\u2019re older, the posthumous one. Letterbox is for letters that need to feel like letters, not emails.
Letterbox vs Email — FAQ.
Why not just schedule an email?+
What if the recipient doesn't have a Letterbox account?+
Is Letterbox more private than email?+
Can I use email AND Letterbox?+
What if the person wants to reply?+
Does Letterbox send me emails?+
Keep writing
Keep exploring
Letterbox vs FutureMe
For future-self letters specifically.
Letterbox vs Slowly
Pen-pal app comparison.
Unsent letters
Letters you've been writing in your head.
Love letters
Why email kills a love letter.
Apology letters
The apology that deserves more than an email.
After I'm gone letters
Posthumous delivery via trusted contacts.
Try Letterbox free.
One recipient, unlimited letters, forever free. Upgrade only if you need more.
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