Dear you,
An app for slowly exchanging letters with someone new
Pick a letter from your mailbox and open it — that's how it begins.
Open the envelope
PEN PAL
Send one letter, receive one
No names, no ages — only letters travel here.
Write a letter
Sending one letter earns you one pick.
Pick from your mailbox
Choose the one letter that speaks to you and open it.
Opened means friends
When your letter is opened it gets postmarked — from then on, replies are unlimited.
STATIONERY
Envelopes, paper, stamps — and stickers
Choose an envelope, letter paper, and a stamp, then add stickers.
You can enclose one photo.
It arrives in the other person's mailbox exactly as you decorated it.
The Subscription Pass includes premium paper, envelopes, stamps, and stickers.
PAR AVION
Airmail — to mailboxes worldwide
Your letter is sent to mailboxes around the world.
Someone who speaks another language opens it — translated automatically.
Replies travel back in each other's languages.
Translated across 15 languages
- Korean
- English
- Japanese
- Chinese (Simplified)
- Chinese (Traditional)
- Spanish
- French
- German
- Russian
- Portuguese (Brazil)
- Portuguese (Portugal)
- Hindi
- Indonesian
- Italian
- Turkish
POSTMARK
When your letter is opened, it gets postmarked
The moment it was read stays as a postmark.
EXPRESS
In a hurry? Send it express
Express letters sit at the front of the mailbox.
Up to 3 a day — which letter to open is always the reader's choice.
MILESTONE
Letters together become commemorative stamps
Letters exchanged and days together are recorded with each pen pal.
As the record grows, commemorative stamps are added.
You can put them on any letter you send.
- 3 letters
- 10 letters
- 30 letters
- 100 letters
- 1 year together
- until the next stamp
TIME CAPSULE
A time capsule to your future self
Seal a letter with an opening date.
Until that day, even you can't open it.
On the day, it arrives as a notification — from your past self.
Up to 10 sealed at a time.
- In 6 months
- In 1 year
- In 3 years
- Pick a date
QUIET PROMISE
Quiet promises
- No names, no ages
- There are no profiles — only letters travel.
- Every letter is reviewed
- Letter content may be reviewed by AI and humans; reported content is handled within 24 hours.
- Blocking stays quiet
- You can block anyone who makes you uncomfortable — they're never told why.
- This website uses no cookies
- No analytics tools collect your visits.
Subscription Pass
For writing without ads or waiting.
- No interstitial ads.
- Write your next letter without the cooldown.
- Express fee (an ad) is waived — still 3 a day.
- Premium letter paper, envelopes, stamps, and stickers.
₩4,400/mo · ₩29,000/yr (billed in your store's currency)
Yearly saves 45% vs monthly.
Manage or cancel anytime in your store's subscription settings.
Frequently asked questions
Is it free to use?
Yes. The core letter exchange is free, supported by ads. With the Subscription Pass there are no interstitial ads.
Is it really anonymous?
There are no profiles — no names or ages. Only your letters travel between you.
How do replies work?
Send one letter and you can pick one from your mailbox. When someone opens your letter you become friends, and replies flow freely after that.
Can I exchange letters across languages?
Send by airmail and your letter reaches mailboxes worldwide. 15 languages are translated automatically, both ways.
How do I cancel the Subscription Pass?
In your store subscription settings (Apple ID subscriptions / Google Play payments). Cancel at least 24 hours before the period ends and the next fee is not charged.
How do I delete my account and data?
You can delete your account in the app settings; the full steps are on our account deletion page. Account deletion guide
Dear you,
A letter you write today will land in someone's mailbox.