I forget to affix a stamp. What will happen to my mail?

You need stamps to send a letter. How many and which stamps depend on the size (standardised or non-standardised), weight and destination of your letter. Quickly find how many stamps your letter requires via our overview page. You can calculate the price of your letter at the same time. To the overview page

Just like with electronic addresses, one letter can affect the proper delivery. Validate your address to be sure that it is known at bpost. The photo below shows how to write the address of the addressee correctly. Don't forget to mention the name of the addressee (required) and to put your own address on the back of your letter (recommended but not required).

Positioning zone of recipient address box

Recipient address box

Franking and cancellation zone

Free zone for the sender

Return address zone

Index zone

Semi-free zone for the sender (no address)

The maximum dimensions your letter can be are:

• length: 350 mm
• width: 230 mm
• thickness: 30 mm
• weight: 2 kg

If your letter weighs more or is longer, wider or thicker, you will need to send it as a parcel. In that case, you need a shipping label. Number of stamps on your letter Our overview page makes it easy to determine how many stamps your letter requires. You can calculate the price of your letter at the same time. To the overview page