What is so great about postcards is that you can send it by mail without even an envelope to hide your postcard printing message. Your postcard printing content and information are there for everyone to see. In fact, you can already decide whether to keep a postcard or dunk it in the trash when you see one. That means that even if you just got a glimpse of the content, you saw enough to help you make your decision.
So what postcard printing piece gets mailed and what’s not? Here are the guidelines for standard postcard mail sizes:
- Postcard size of 3.5 x 5 inches is allowed. Less than that and your postcard printing material will not be mailed by the USPS.
- Postcard size of 4.25 x 6 inches is allowed. Anything more than that and your postcard printing pieces must be mailed as a letter, with a higher rate.
- Postcards are allowed with a minimum thickness of .007 inches. Anything less is non-mailable.
- Postcards are allowed with a maximum thickness of .25 inches. More than that and your postcard printing pieces are considered as a Parcel.
- Postcards with intermediate sizes (like A4 x 5.5 inches postcards) can be mailed at a postcard rate. However, the postcard printing pieces should be within the specified size, thickness, weight, specifications discussed to be considered as postcard mail.
Happy postcard mailing!
