Ed #12 Standards

Defined as a “rectangular card stock mailpiece not contained within an envelope,” the postcard is one of the most economical, widely used, and effective forms of mass communication. There are no envelopes to open and no paper to unfold. The message gets through, without any effort by the reader.

As simple as a postcard might seem, a number of USPS standards apply. Postcards must have at least a minimum size of 3.5” x 5”, and a maximum size of 4.25” x 6”, as well as a required caliper. Check with your local post office for current specifications.

Whether you are mailing in the U.S., Canada or another country, it’s important to follow the appropriate national standards. If the card does not meet them, the mail campaign could be rejected for delivery or incur a mailing surcharge that could add thousands of dollars in unnecessary expenses.

Choosing the right finish for the postcard is important too. If the card will carry a printed address rather than an address label, you might consider using dull coated or matte coated paper, because ballpoint pen or inkjet printing can sometimes smear when applied to coated stocks with a gloss finish.

And go with the grain. Postcards should be printed so that the grain of the paper is parallel to the long dimension of the card, since long grain cards are less likely to jam sorting equipment.