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Monthly letters from friends around the world, filled with mysteries, culture, creativity, and fun.
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Spark
Build
Grow
Make

Every month a real envelope arrives from a different friend. Inside are three things made for kids ages 6 to 9.

From a pen pal in another country
A clue to crack, with the tool to solve it
Easy to make solo or with a grown-up





Four friends. Four corners of the world. A new adventure in every letter.



















$52
$13 per letter
4 letters$88
$11 per letter
Save $16$120
$10 per letter
Save $36Clueling is written for kids ages 6 to 9.
A letter from that month's pen pal, a recipe card from their kitchen, and a puzzle with the tool needed to solve it.
No. Amara, Einar, Hana and Lucas are fictional characters. Their letters are written to feel like mail from a friend.
Yes. The envelope and the letter are both addressed to your child by name.
No. Every letter is a complete story, so your child can start any month.
November 2026. Join the waitlist and we will email you when plans open.
Your 10% off code arrives in the launch email.
You pay once, up front, for the plan you choose: 4, 8, or 12 months. The plan renews when it ends unless you cancel.
Shipping is free in the United States. Letters travel by USPS and usually arrive 5 to 10 business days after they are mailed.
Yes. You can buy a plan for a child at a different mailing address, and for more than one child.
