Postcrossing Blog

To mark Postcrossing’s 20th birthday, PostNL commissioned Gouda‑based designer Sandra Smulders (whose portfolio already includes quite a few Dutch stamps) to create a celebratory stamp. On July 14, the new stamps went on sale — a lively sheet of red‑white‑blue zigzags that hints at both the Dutch flag and the criss-crossing of postcards. We especially like the unique dented pattern on the bottom of the stamp!

We spoke with Sandra about the ideas behind the design, the little details hidden in each stamp, and how it feels to watch her work fly through the mail in all the postcards. :)

What was your initial reaction when you were asked to design a stamp for Postcrossing’s 20th anniversary?

I am always happy when asked to design a stamp sheet. Usually, the ideas only come to me once I have delved into the subject, but with Postcrossing, I immediately saw the arrows in my mind’s eye. This ultimately became the basis for the design. So this subject suited me very well in terms of design. I therefore set to work on this assignment with great enthusiasm.

Can you walk us through your creative process for this stamp sheet — where did you start, and how did the concept evolve?

I began with two things in mind: a bold zig‑zag arrow pattern and a horizontal sheet with the stamps centered. From there everything clicked into place.

The red‑white‑blue bars stretch across the sheet to form a subtle Dutch flag; rotating the bottom row of stamps 180° let the blue bar span two stamps and stay the same width as the red and white. To add depth I overlaid each bar with grey tints and simple monochrome icons that sum up Postcrossing: paper‑chain people for the project’s friendship, a world map on the blue “water” strip for global reach, and postcards, naturally. Hand‑written‑style lettering fills the remaining triangles, while the “sorting hook” and the value “1” sit opposite each other for balance. A few diagonal guide lines finish the sheet, tying the layers together and giving the design its sense of movement.

Have you sent or received postcards yourself through Postcrossing, or do you perhaps have a special memory in connection to snail mail that you can share?

I don’t send or receive cards myself and I don’t (yet) participate in Postcrossing. But I do like to send and receive cards or mail. Receiving mail is so much fun. As a teenager, I had several pen pals and sent letters all over the world. I really enjoyed it when I received a reply. Who knows, maybe I’ll take this up again in the future.

As a stamp designer, what’s it like to see your work travel the world on thousands of postcards? :)

It’s certainly very nice that many people around the world will see my work. Even if they don’t know it’s mine. Who knows where my work will end up? And maybe this is a step closer to my international design career.

Has it really been 20 years? The mind boggles at the number… that’s two whole decades spent thinking about this wild idea of connecting the world through postcards. 7,671 days of postcards, stamps, addresses, smiles, and stories. No one could have predicted this adventure would last this long… and yet, here we are. We’re so grateful for all these years, and especially grateful to the over 800,000 of you who joined us for the ride! THANK YOU! 💙

When I reflect on this milestone, I think a lot about creation versus maintenance. Putting something new in the world — whether it’s a project, a community, or even a child — is one thing. But caring for it and keeping it going year after year takes a very different kind of energy. There are countless hours behind the scenes (and the screens) filled with routine, repetition, and sometimes quite a bit of drudgery, just to keep things running smoothly.

But then, there are the stories. The unexpected postcards that bring someone to tears. The joy of discovering a new place or culture. The child learning geography from a map full of colorful cards. The grandma feeling less alone because someone, somewhere, thought of them. All these small and simple connections often make a very big difference in someone’s day, in their understanding of the world, or sometimes even in their sense of belonging. They’re the quiet proof that connection, even through something as analog as a postcard, still matters very much today — perhaps even more.

To everyone who has helped Postcrossing thrive, a very special thank you. Whether you’ve spread the word, hosted a meetup, helped out on the forum, sent feedback or helped support the project financially: you’ve helped keep this idea alive. ❤️ Your enthusiasm and generosity make all the difference.

Now it’s time for celebrations, and you guys have really come through! Our anniversary gallery is also brimming with nice photos of postcrossers and their 20 postcards, which is just a delight to see! If you haven’t posted your photo yet, we invite you to do so today. We’re all a community here, and seeing other people from all over the world who have this one thing in common with us feels really special.

There are an astonishing 179 meetups happening around the world marking the occasion, and so we hope many of you will have (or had) the chance to join to meet old friends or make new ones. 😍 In Germany, in the USA and in Poland (at the Warsaw Post Office 1's Philatelic Shop), special cancellation postmarks have been made for the occasion, so look out for those!

And if you didn’t get the chance to join a meetup, we invite you to join us in the Postcard Lounge today, for a relaxing moment of postcard writing! It’s a silent streaming room and an experiment in connection — a place where we sit down to write postcards together (but apart). Put some music on, grab your favorite drink and some postcards, and take a seat at our virtual table! ☺️

And last but not least, we also have exciting news for postcrossers in the Netherlands: PostNL is launching a celebratory stamp for this very special occasion! Hoera! 🎉

They should be available on PostNL’s shop from today, and we’re going to tell you more about this stamp in an upcoming interview with its designer… but for now, we leave you with a small introduction to the stamp:

"The Postcrossing stamp sheet, designed by Sandra Smulders, visualises the global exchange of postcards through bold geometric shapes and zigzagging lines. Inspired by the idea of connection and reciprocity, the design features triangles and rectangles symbolising people, postcards, and the world.

A red-white-blue colour scheme subtly forms the Dutch flag, while dynamic lines represent the movement of mail across borders. The central layout and repeating elements create balance and unity, capturing the spirit of Postcrossing—sharing, receiving, and connecting through mail."

So that’s it! Whether you’re joining a meetup, writing a card, or just quietly smiling at your mailbox, we hope you’ll find a little moment to celebrate this milestone in your own way. Eat some cake, raise a glass, dig into your postcard stash, or do a little happy dance — whatever feels most festive to you! And if you do something special to mark the occasion, we’d love to see it: feel free to share your celebration with us and the community on the forum or on social media, using the hashtag #postcrossing20.

Thanks for being part of this journey. Here’s to postcards, to people, and to the power of small things. And here’s to the next 20 years, come what may! 🎉

Belgium might be known for chocolate, waffles and some famous comics (like Tintin, Lucky Luke or my personal favorite, Gaston Lagaffe!)… but from today onwards, it will also be known for some cute Postcrossing-themed stamps! They are out there in the world now, ready to make postcrossers happy both in Belgium and abroad!

We love the unique format of the stamp sheet, designed to look like a postcard itself! Featuring cheerful scenes of all the stages of Postcrossing, it really does a good job of showing what the hobby is all about. The text on the stamp sheet is written both in Dutch and French, the two most widely spoken languages in Belgium.

Naturally, also the cancellation mark is available in two languages!

Also, bpost is also issuing a special First Day Sheet, featuring the stamps in the front and some information about Postcrossing and this commemorative issue on the back.

A meetup was scheduled for today in Brussels to welcome in the new stamp, and we’re sure many postcrossers are heading to the philatelic boutique in Brussels (or more likely, to bpost’s online shop) to get themselves some. They can also be ordered at any post office in Belgium to then have them delivered to your address.

Wherever you are, we hope you’ll soon receive a postcard with one of these colorful stamps!

PS: Veerle (aka veke250) got some of these new stamps at the Skalafila pre-sale event, and took some pictures to show the community what they look like! 😍

We’ve been biting our tongues to share the news with you, and now it’s finally time: bpost will launch five new Postcrossing-themed stamps to celebrate Postcrossing’s 20th anniversary next year! 🎉 The stamps come in a special stamp sheet that looks like a postcard:

Isn’t that clever? 🤩 The stamp sheet was designed by Geert Wille and features the 2 main languages of the country. On the stamps, you can see the several steps of the journey of a postcard, from writing to arriving in someone’s hands across the world — like a “paper airplane”, flying around and connecting us all!

The stamp issue will be on sale from 16th June 2025 and we know there’s still a long time to go… but we can’t wait for next summer to see these stamps in the postcards sent from Belgium!

Today is the day the new Postcrossing-themed stamps from Poland make their debut! Here they are, looking lovely in the hands of Monika (aka MonikMary), who woke bright and early to send us these pictures:

Don’t they look brilliant? 😍 This morning, postcrossers from Poland, Italy, Iran, France, Germany, Lithuania, Russia, Belarus and Ukraine met at the main post office in Warsaw today to celebrate this happy occasion and send postcards with the new stamps.

Soon they should be making their way to many mailboxes around the world, and I confess we’re very impatient to see them!

While we wait for them to appear in our mailbox though, we got in touch with stamp designer Agata Tobolczyk to learn more about her inspiration and creative process.

This is not the first stamp (or the first Postcrossing stamp, even!) that you’ve designed. How did you get into the work of designing stamps?

My journey into stamp design started in 2009, and ever since, I’ve been fascinated by this small graphic form. What’s interesting is that, outside of stamps, I usually work with much larger formats — for instance, when I paint, the canvases are often over 200×200 cm! So there’s a real difference in working on something as small as a stamp, and I really enjoy that contrast. I’ve also had the chance to design stamps for Luxembourg and Slovenia, and in all of them, what really fascinates me is creating a whole visual world beyond just the individual stamp. I’m passionate about how stamps interact within a sheet or block, making the entire composition more than just a collection of separate elements – it becomes a piece of art in itself.

What inspired you to create this new design for the Postcrossing stamp?

The Postcrossing theme has a special place in my heart. For this year’s stamps, I wanted to emphasize the joy and energy that come from sending and receiving postcards. There’s something really magical about how these little cards can bring so much happiness and connect people across great distances. My goal was to capture that movement and excitement — almost like the postcards are jumping from one place to another with enthusiasm! I focused on playful imagery and vibrant colors to reflect that positive energy.

What steps were involved in your creative process?

In recent years, I don’t sketch much anymore — most of my creative process happens in my head. I’ve worked with the Postcrossing theme before, and while I may have some old sketches from years ago, I haven’t been able to locate them! The idea of a running postcard actually came up during my work on the 2016 Postcrossing stamp (the one with the suitcase/mailbox). When I receive a new project, a few ideas always come to mind, and the running postcard was an idea that I’d set aside back then. Since I had two stamps to design this time, I approached it differently — I wanted them to work as a pair. Naturally, the idea of a joyful mailbox, specifically a red Polish mailbox, came to mind for the second design. One stamp is for international postage, where the postcard is flying across the world, and the other, with a lower value, shows a happy Polish mailbox. Together, they tell a story of connection — both locally and globally.

Are you perhaps a letter/postcard writer yourself?

Unfortunately, I must disappoint some postcrossers here — I don’t write postcards or letters as often as I’d like these days. The fast-paced world and the ease of modern digital communication have taken over. But I absolutely love the concept of Postcrossing and think it’s a wonderful way for people to connect. There’s something so special about this slower, more thoughtful way of communicating, and I admire how it brings people together across the globe.

Thank you, Agata!

We hope one of these little pieces of art will soon make its way to every postcrosser’s mailbox out there, spreading smiles and brightening the day of those who receive them. Keep an eye out for postcards from Poland in the coming months!