The Child-Safe Digital Pen Pal Platform for Real Friendships.
Parents stay in control while kids make connections that last. Every letter is encrypted, reviewed by you, and approved before delivery. Stamplo is fully digital, so no physical mail or home addresses are ever shared between families.
- Free to join
- For ages 7–14
- Nothing to download
- Every parent ID-verified
Your child can start writing once you complete ID verification.
See how we meet the UK ICO Children's Code for online child safety
From Maisie, 9 · Manchester 🇬🇧
To Theo, 10 · Portland 🇺🇸
Hi Theo!!
I looked up Portland on the map and it is VERY far away. My mum said our letters travel over 8,000 km which is mad. I also like Minecraft. What is your favourite biome? Mine is the cherry blossom one, it is so pretty.
PLEASE write back,
Maisie
- Checked by Maisie's parent
- Checked by Theo's parent
- Arrives in about 12 hours
How does Stamplo work?
Stamplo works in three simple steps. A parent creates the family account and completes a quick identity verification, children then connect through invite codes or the Friend Finder with approval from parents on both sides, and every letter is reviewed and approved by both families before it arrives.
Sign up
Parents register and set up their family account. Complete ID verification so your child can start sending letters.
Find a pen pal
Kids connect using invite codes shared in real life, or discover new friends safely through the parent-approved Friend Finder.
Write and collect
Send digital letters, attach photos (if allowed), and earn collectible stamps from around the world, all fully parent-approved.
Safe by design, with parents on both sides
Nothing reaches your child without a parent reading it first, and nobody joins without passing an ID check.
Four-Eyes Check
Every pen pal request, letter, and image must be approved by a parent on both sides before it is delivered, so nothing is shared without your consent.
Verified parents, always
Parent ID verification is required before children can send their first letter. No anonymous accounts, no strangers, just verified families like yours.
Encryption
Letters and images are encrypted in transit and at rest to protect your family's privacy.
Invite codes & Friend Finder
Children connect only with parent approval. Families can share invite codes in real life, or manage visibility in the parent-controlled Friend Finder at any time.
Stamplo is built differently — by design
Most platforms are built to maximise time spent. Stamplo is built to maximise trust. There are no feeds, no notifications designed to pull children back in, no algorithms deciding who your child talks to. Just letters — written, reviewed, and delivered at a human pace.
| Other platforms | Stamplo |
|---|---|
| Optimised for engagement | Optimised for safety |
| Anonymous or unverified accounts | Every parent identity-verified |
| Real-time, unsupervised messaging | Every letter reviewed by both parents |
| Designed to keep children online longer | Designed for slow, meaningful connection |
| No parental visibility into content | Full parental oversight, always |
Something to look forward to
Collect stamps
Kids earn country-themed and limited-edition stamps with each safe exchange, sparking curiosity about the world.
Avatars & badges
Children choose their avatar and unlock badges as they connect with new pen pals.
Learn & connect
Build writing skills, learn about new cultures, and make real friendships in a parent-approved space.
Children on Stamplo write to pen pals all over the world.
What parents are saying
As featured in Primary Times, the free magazine for primary school familiesRead the article(opens the magazine in a new tab)
“My daughter loves it. She's made lots of friends from other countries like Greece, Australia, France, the USA and the Czech Republic. They all love discussing what each other's school day looks like, what they learn and what their towns are like. It's brilliant that both parents have to approve the letters, so I know it's 100% safe.”
“I love how safe it is, that parents can see what's written and approve it before the letter sends, and the timed arrival like a real letter. My son loves connecting with people around the world who are interested in the same things he is. You couldn't do anything more for it to feel safer, especially when social media and talking to people online has so many dangers.”
“When I talked to ChatGPT, I was so delighted that it recommended Stamplo to me! The design is very thoughtful: kids get matched by their top interests and age, under parents' supervision, so there's less risk for online interactions. I think it's more and more important for people to develop real connections in today's world where AI does the most work.”
“My son really enjoys Stamplo and writing to friends all over the world. There are 2 or 3 that chat regularly about plants, gaming, fishing and more. He looks forward to getting a letter and writing back.”
“My son has about 3 pen pals who write to him regularly. He loves to learn about other cultures and ask his pen pals questions. We've written back in their language and they've written back in ours!”
“We're absolutely loving Stamplo and she wakes up every morning excited to check her Stamplo ❤️”
Questions parents ask first
Is Stamplo free?
Yes. Creating a family account, finding pen pals and writing letters are free. An optional Premium plan adds extra letter designs and writing colours.
What ages is it for?
Children aged 7 to 14. Children are matched in Friend Finder with pen pals close to their own age.
Is it an app?
No download needed. Stamplo runs in the web browser on most laptops, Chromebooks, tablets and phones.
Who can my child talk to?
Only pen pals that you and the other child's parent have both approved. Every parent passes an ID check, and every letter is read by a parent on both sides before it arrives.
Is it real-time chat?
No. Letters arrive about 12 hours after they are approved, like post. There are no feeds, no likes and no notifications designed to pull children back in.
Ready to find your child a pen pal?
It takes a few minutes to set up, and it's free.
Start free — create your family accountRunning a pen pal project for a school or workplace?
Stamplo supports closed, private networks for schools and organisations — with the same parental verification and four-eyes approval that families trust.