What the Data Shows About How Children Write Letters Online

When we first built Stamplo, one question kept coming up. If children were given a slower and supervised way to communicate online, how often would they actually write letters to each other?

Most online platforms encourage fast messages and constant replies. Stamplo works very differently. Letters are written by children, reviewed by parents, and then sent on. Replies arrive later rather than instantly. There are no follower counts, no streaks, and no notifications pushing children to respond immediately. The experience ends up feeling closer to traditional pen pals for kids than a modern messaging app.

How often children write letters

Looking at activity from verified Stamplo families gives a useful picture of what actually happens when communication slows down. Children currently write just over five letters per month on average.

In practice this means most children write roughly one letter every six days. Conversations tend to develop gradually instead of in rapid bursts of chat messages. The pace seems to reflect the structure of the platform itself. Letters are not expected to be instant, so children approach them differently.

How long children take to reply

The timing of replies shows a similar pattern. Across Stamplo the average delay between letters is about six and a half days. Children usually write a letter, wait for a response, and then return to the conversation several days later when the reply arrives.

That rhythm is very different from instant messaging. Conversations unfold slowly, often with a few days between each exchange.

Do children reply to letters?

Not every letter becomes a longer conversation. At the moment around 62 percent of conversations receive at least one reply. Most letters do continue, although some remain a single introduction.

When conversations do develop, they usually consist of a few thoughtful exchanges rather than endless threads. The average pen pal friendship currently includes about 3.6 letters in total. In practice that often means one child writes first, the other replies, and the two exchange another message or two before the conversation pauses.

How long pen pal friendships last

Some friendships continue for much longer. The longest continuous exchange on Stamplo so far has lasted 289 days, which is a little over nine months of occasional letters moving between the same two children.

These longer exchanges suggest that some children are forming stable pen pal friendships that last across school terms and seasons rather than brief conversations that disappear after a day or two.

Where Stamplo letters travel

Another interesting pattern is how widely the letters travel. Children on Stamplo are now exchanging messages across 65 different country combinations.

The most common pairing is currently the United Kingdom and the United States. Alongside that, many smaller connections are appearing between countries that would rarely meet in everyday life. Children in Hungary are writing to Sweden. Australia connects with Italy. China exchanges letters with Greece.

What these numbers suggest

Taken together, these numbers offer a glimpse of how children communicate when the environment is slower and parents remain involved. Messages arrive every few days rather than every few seconds. Conversations usually develop through a handful of thoughtful exchanges rather than long chat threads.

Stamplo is still a young platform and these patterns will likely change as more families join. For now the data suggests that when children are given a calm space designed around safe communication rather than constant engagement, many naturally settle into the same rhythm that pen pals have followed for generations.