The secret journey of your postcard, from postbox to mail carrier
Published on 12 August 2026 · 3 min read
You scribble a few lines, stick on a stamp, slip the card into the slot… and then what? Between the yellow postbox of a French village and your grandmother's letterbox, your card sets off on a proper little journey, run with clockwork precision. Here it is, step by step.
Collection, every afternoon
Every yellow postbox in France carries a label showing its collection time. An agent comes to empty it, usually at the end of the day, and takes the mail to a nearby preparation site. There, your card joins thousands of other letters in crates, bound for the departmental sorting centre, a true mail factory.
A few seconds at the sorting centre
This is the most spectacular stage, and the fastest. A machine straightens the letters, cancels the stamp with a mechanical postmark, then a camera photographs the address. Software deciphers it in a fraction of a second and prints a barely visible code on the back, which will act as a compass for the rest of the trip. If your handwriting baffles the machines, an operator reads the image on screen and corrects it by hand. Your card is then sorted by destination and leaves overnight by lorry, sometimes by plane for overseas territories.
The morning round
In the early hours, it reaches the delivery office in the recipient's town. That's where the mail carriers prepare their round: each letter is arranged in the exact order of streets and house numbers. Then comes the moment everyone knows: the yellow bike or van, a hand opening the letterbox, the card sliding in. Within mainland France, the whole journey usually takes two to three working days.
The good news is that you no longer need to hunt for a stamp or a yellow postbox to give someone this little journey. With UnCoucou, you pick a photo on your phone, write your message, and your card is printed, stamped and posted for you from €2.29 all inclusive. It will follow exactly the same route, all the way to the right letterbox.