# Free letter paper: write a letter online

Updated 12 October 2026

Write a letter online on free seasonal letter paper, then download a PNG or seal it in a bottle to share by link. Writing and downloading need no account; sending the sealed letter in Sea Pals needs both people to join. If the recipient accepts, you can keep talking in Chats.

## Choose plain or seasonal letter paper

Write on plain paper or choose spring plum blossom, summer shore, autumn maple or winter camellia. Add a To line, your message and a signature.

## Download your online letter as an image

Download letter makes a PNG image with the selected paper, writing and a small seapals.app mark.

## Share a letter in a bottle

Seal it in a bottle saves the letter and gives you a link to copy or share. The recipient’s web preview shows the bottle and the first line. Both people join Sea Pals to send and receive the full letter, and chatting starts if the recipient accepts it.

### Is it free?

Yes. All the letter papers, writing and PNG download are free.

### What does my friend see?

A bottle on the sea. They tap to uncork it and read the first line. Join Sea Pals to receive the full letter; the sender needs to join too.

### Can I put a link in it?

No. Links, social handles and phone numbers cannot go in a sealed letter. The words pass through the server’s rules filter when you seal it.

### Can I save a letter without sending it?

Yes. Download letter saves a PNG image. You can keep or print that image yourself.

### Is my letter uploaded?

Sealing a bottle sends the letter, signature and selected paper to the server to make the link, so keep that link private.

## Related pages

- [Friendship quiz](https://seapals.app/friendship-quiz)

- [Otter maker](https://seapals.app/make/otter)

- [Four-cut photo booth](https://seapals.app/booth)

- [Friendship book](https://seapals.app/book)

- [Sea creature quiz](https://seapals.app/quiz)

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## Pen pals for…
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- [K-drama fans](https://seapals.app/pen-pals/kdrama)
- [Anime fans](https://seapals.app/pen-pals/anime)
- [Japanese pen pals](https://seapals.app/pen-pals/japanese)
- [Learn Japanese](https://seapals.app/pen-pals/learn-japanese)
- [English practice](https://seapals.app/pen-pals/learn-english)
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- [Korean pen pals](https://seapals.app/pen-pals/korean)
- [Korean practice with friends](https://seapals.app/pen-pals/learn-korean)
- [K-drama fans](https://seapals.app/pen-pals/kdrama)
- [Anime fans](https://seapals.app/pen-pals/anime)
- [Japanese pen pals](https://seapals.app/pen-pals/japanese)
- [Learn Japanese](https://seapals.app/pen-pals/learn-japanese)
- [English practice](https://seapals.app/pen-pals/learn-english)
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