Classes of mail

Here are the different classes of mail:

  1. First-Class Mail: This is the most common type of mail and is used for personal and business correspondence. It includes letters, postcards, and bills.
  2. Priority Mail: This is a faster and more reliable service than First-Class Mail, with delivery times of 1-3 business days. It is often used for packages and envelopes that need to arrive quickly.
  3. Priority Mail Express: This is the fastest mail service, with overnight delivery to most US addresses. It is often used for urgent or time-sensitive items.
  4. Parcel Post: This is a cost-effective service for sending packages that don't require expedited delivery. It can take 2-9 business days to arrive.
  5. Media Mail: This is a cost-effective service for sending books, CDs, DVDs, and other media items. It is often used by libraries, publishers, and online retailers.
  6. International Mail: This is used for sending mail to addresses outside the United States. There are various services and rates depending on the destination and type of mail.
  7. Certified Mail: This is a service that provides proof of mailing and delivery. It is often used for important documents, such as legal documents and tax returns.
  8. Return Receipt Requested: This is a service that provides proof of delivery and allows the sender to request a return receipt from the recipient.
  9. Registered Mail: This is a service that provides proof of mailing and delivery, and also provides insurance coverage up to $5,000.
  10. Special Services: This includes services such as tracking, signature confirmation, and insurance, which can be added to any mail class.

Note: The specific classes and services may vary depending on the country or region.