Can I use personalised MyStamp stamps on square envelopes?

How does MyStamp work? Step 1: Choose your photo
Select a photo from your computer, tablet, smartphone, Picasa, Flickr or Facebook. It can be horizontal or vertical. You can edit your photo in the tool; for example you can zoom in or add some text. Good to know: the photos remain your property. bpost does not become the owner of your photo and does not have the right to use your photo unless you give explicit permission. Step 2: Make your choice
Choose your stamp: Priority stamp, Non-Priority stamp (1 for standardised mail in Belgium and 2 for non-standardised mail up to 100 g), a Europe or World stamp. Choose the number of stamp sheets. Step 3: Enter your details
Enter your promotional code then choose whether you want to log in or continue without an account. Step 4: Pay for your order
Pay for your personalised stamps with Maestro, Visa, MasterCard or home banking.

You can choose between a horizontal or vertical stamp.
Size of a horizontal Non-Priority stamp:

• Stamp: 72 mm x 31.4 mm
• Photo: 52 mm x 28 mm

Size of a vertical Non-Priority stamp:

• Stamp: 44.5 mm x 31.4 mm
• Photo: 25 mm x 28 mm

Size of a horizontal Priority stamp:

• Stamp: 72 mm x 31.4 mm
• Photo: 48 mm x 27 mm

Size of a vertical Priority stamp:

• Stamp: 44.5 mm x 31.4 mm
• Photo: 20.5 mm x 27 mm

  Check the prices of personalised stamps on the MyStamp website. The more stamps your order, the cheaper. Moreover, bpost delivers your order for free.