Definition

Noun: 1. A category of mail service: This refers to a class of postal service, primarily in the United States, used for sending personal and business correspondence. Items sent via this service are typically sealed against inspection and are given priority handling over lower classes of mail. 2. The physical items sent via this service: The term can also refer to the collective letters, postcards, and sealed packages that are sent using this postal class.

Usage Examples

• As a service category:
  • "For important documents, you should send them by first-class mail to ensure faster delivery."
  • "The price of a first-class mail stamp increased this year."
• Referring to the physical items:
  • "The first-class mail is sorted separately from magazines and catalogs."
  • "All first-class mail must be sealed before posting."

Advanced Usage

• "First-class mail" vs. "Standard Mail": In postal systems, "first-class mail" is distinguished by its priority status, speed, and the fact that it is sealed. It is contrasted with "standard mail" (often used for bulk advertising) or "media mail" (used for books and other media), which have lower postage rates and slower delivery times.

Variants and Related Words

• First-class (adjective): Of the highest quality or priority. When used separately, it often describes a premium tier of service (e.g., first-class seat on a plane, first-class service).
  • Note: While related, the adjective "first-class" has a broader meaning beyond postal services.
• Priority Mail (noun): A branded expedited mail service offered by the United States Postal Service. It is a distinct, often faster service tier compared to standard first-class mail.
• Letter mail (noun): A general term for correspondence sent by post, which is typically what comprises first-class mail.

Synonyms

• Letter post: A general term for the system of sending letters.
• Priority post (context-dependent): In some contexts, this can be synonymous, though it often implies a faster, more specific service.

Related Phrases

• To send something first-class: To use the first-class mail service for an item.
  • Example: "Make sure you send the contract first-class."
• First-class postage: The amount of money required to send an item via first-class mail.
  • Example: "Does this envelope have sufficient first-class postage?"

Noun

1. mail that includes letters and postcards and packages sealed against inspection