The postage rate is determined based on mail class and package dimensions like weight and shape. As a result of the rate hike, metered mail is now 1 cent less than First Class 1-ounce letters.
Postage services also include insurance, tracking and certified mail. The rate for insurance begins at $1.89 and goes up based on the contents of the package. The rate for certified mail is $3.30, and mail tracking is free.Learn more about Postal Services