Postal Guidelines

First Class Postcards

Minimum Size: 3.5″h x 5″w — Thickness .007″
Maximum Size: 4.25″h x 6″w

Standard Postcards

Regular Postcards
Minimum Size: 3.5″h x 5″w — Thickness .007″
Maximum Size: 4.25″h x 6″w

Oversize Postcards*
Maximum Size: 6.125″h x 11.5″w — Thickness .009″
*Must meet aspect ratio and be rectangular in shape

Letter Size Mail

Minimum Size: 3.5″h x 5″w — Thickness .007″
Maximum Size: 6.125″h x 11.5″w — Thickness .75″

Flat size Mail

Minimum Size: 5″h x 6″w — Thickness .009″
Maximum Size: 12″h x 15″w — Thickness .75″