Make Sure to Meet Postal Regulations
When creating postcards, BRCs and other self-mailers, make sure the paper you want to use meets all USPS regulations. According to the USPS, postcards up to 4-1/4" x 6" must be at least 7 pts thick (.007 inches); cards larger than that must be at least 9 pts (.009 inches), so make sure the stock you choose is thick enough to meet these criteria or can be doubled up to reach the necessary thickness. If you have any doubts that the paper you would like to use will meet these regulations, have the printer mock up a copy of the final product and submit it to a USPS Mailpiece Design Analyst (MDA) for review. MDAs also will check your design for a number of other variables that will affect mailability and postage costs, including color (many colored outer envelope and postcard stocks will not provide sufficient contrast for automated address readers), rigidity, flexibility and barcode printing tolerance. That extra work upfront may save you both valuable time and money in the end.
For more on mailpiece review, visit http://www.usps.com/directmail/mailpiecereview.htm.