(FOX NEWS) -- The United States Postal Service will slow down delivery speeds for nearly one-third of first-class packages as part of new service standards slated to take effect starting May 1.

HOUSTON — We are less than two weeks away from the Christmas holiday. These are the latest dates you can ship something and have it arrive by Christmas. USPS Ground Advantage Service – Dec. 18 First ...

The U.S. Postal Service said “refined services standards” will be put in place for certain types of mail. The changes will take effect in a little more than a month and covers first-class mail, ...