First-Class Mail Shape-Based Template

Make sure you're using the correct postage for your mail with the First-Class Mail Shape-Based Template from Stamps.com. Just place your mailpiece in the corner of this guide to determine whether your mailpiece is a postcard, letter, non-machinable letter, or package. Our color-coded design makes determining mail types easier than ever Thickness slots help you determine if your mailpiece is a letter, flat or package Guide can also be used as a ruler - accurate to 1/8" Guide can be used to determine USPS First-Class retail rates only