Weight and shape affect new mail costs

WASHINGTON -- A new Postal Service approach to pricing will reshape the future of mail today, when a new pricing system goes into effect along with new rates.
The new pricing system is based on shape as well as weight, enabling mailers to save money in some cases by simply folding the items to be mailed so they can fit into a smaller envelope.
The new system reflects the fact that the cost for handling letters, large envelopes and packages differs. By simply choosing different packaging, customers can reduce their mailing costs.
Shaped-based pricing, in effect, creates a more flexible rate system by giving mailers the opportunity to obtain lower rates if they find ways to configure their mail into shapes that reduce handling costs for the Postal Service, helping to keep rates affordable for everyone.
For example, if the contents of a First Class Mail large envelope are folded and placed in a letter-sized envelope, customers can reduce postage by as much as 39 cents per piece. If the contents of a First Class Mail package are laid into a large envelope, customers can save 33 cents per piece.
The Postal Service is also reducing the additional ounce rate today. As mail pieces become heavier, the new additional ounce price declines. For letters over one ounce, the new prices are actually lower than the old prices.
Also Tuesday, the "forever" stamp will go into effect. It sells for 41 cents, the new rate that went into effect today, and will remain valid even if rates rise again before the stamp is used.