Did you know that postcards can be used for a lot of things? Besides 'bragging' with your holiday you can also use them as invitations or for promoting your company or event. In person or by mail, it's all possible. First select the size, the material and the printing method. Then you deliver your own design and add a your message. It can be that simple.
You aren't sure how to properly design your print file? Check out the design guidelines for Postcards.