If you want to attract more people to visit your showroom, shop or even your website then you may consider doing a leaflet or postcard mail out. Postcards can be effective as they tend to stand out a little more from the standard letters or flyers that people send. They are also often made from card meaning they tend to stand the test of going through the postal system better.
When creating your postcard you need to think about how to make the best use of the space. A traditional postcard will have graphics or number of graphics on the front with further details on the back. You will need to keep half of one side free for the name and address to go on.
Think about what message you want to get across, it may be that you want to create it as an invitation for a special event you are having or even a discount card which they can use online or bring in to store. How you display this information is very important and it is well worth using a graphical designer to ensure that not only it looks good but fits as it should on the postcard.