Quote:
Originally Posted by RL 1953
Article Number
000003137
Customer Information
A nonmachinable mailpiece is a mailpiece that must be sorted outside of the standard, automated mail process. Because it is more expensive to processes these mailpieces, a surcharge applies to them.
The nonmachinable surcharge is added to First-Class MailŪ with any of the following criteria:
For pieces more than 4-1/4 inches high or 6 inches long, the thickness is less than 0.009 inch
The length divided by height is less than 1.3 or more than 2.5 (length is the dimension parallel to the address)
It is poly-bagged, poly-wrapped, enclosed in any plastic material, or has an exterior surface made of a material that is not paper
It has clasps, strings, buttons, or similar closure devices
It is too rigid or contains items such as pens, keys or coins that cause the thickness of the mailpiece to be uneven
It has a delivery address parallel to the shorter dimension of the mailpiece
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Not just a surcharge for the rigid mailers but they may be processed as packages instead. That makes this type of envelope best for things like 8x10s and magazines that would otherwise be mangled in a manila envelope.
They generally aren't worth the extra expense and potential hassle for low value cards. Of course everyone's definition of low value may differ.