Which type of mail typically includes priority services and faster delivery?

First-class mail is designed for faster delivery and includes priority services. It is the preferred option for letters, postcards, and small packages that require quicker transit times compared to other mail types. First-class mail typically offers delivery within one to three business days, which makes it suitable for both personal and business correspondence that needs timely handling. This service also provides features such as tracking and the option for additional services like insurance, which enhances its appeal for important or urgent mail.

In contrast, standard mail is generally slower and is often used for mass mailings that are not time-sensitive. Bulk mail is typically utilized for large volume mailings but lacks the expedited shipping benefits. Express mail, while offering the fastest delivery service, is distinct from first-class mail as it guarantees overnight delivery and comes with its own specific pricing and features.