What is the most cost effective postcard size for printing and mailing?

A 4x6 postcard is the most cost effective size to both print and mail. Due to the the small size more 4x6 postcards can be printed on a large press sheet so the price is low compared to other sizes. This is also a common postcard size so equipment is setup to quickly run this size and they can often be run with other jobs to further reduce costs.

Why would I not print a 4x6 postcard?

4x6 postcards are small. Often times they may not have enough space to fit all the information required. Using QR codes and redirecting to websites can be something that can reduce the need for a larger size postcard. Another issue is that 4x6 postcards can sometimes be hidden in mail boxes by larger mail pieces. Many times people prefer to use a larger postcard to ensure it gets noticed in the mail box.

What other size postcards are available?

The most common postcard sizes are 4x6, 5x7, 8.5x5.5, 6x9, and 6x11. These sizes meet the USPS requirements for the lowest postage rates. typically the size that balances size and price is 8.5x5.5. Action Mail can also print any size postcard and larger cards may be more beneficial depending on the size and type of mailing.