Save on 5 1/2" x 8 1/2" Shipping Labels with a Stamps.com discount code

Checkmate is a savings app with over one million users that have saved $$$ on brands like Stamps.com.

The Checkmate extension automatically applies Stamps.com discount codes, Stamps.com coupons and more to give you discounts on products like 5 1/2" x 8 1/2" Shipping Labels.