How postal mail is a type of conventional mode of communication?

Postal mail is a conventional mode of communication that involves sending physical letters, documents, or packages through a postal service. It operates on a structured system where items are collected, sorted, and delivered to recipients, often taking longer than digital methods. Despite the rise of electronic communication, postal mail remains important for formal correspondence, legal documents, and personal messages, providing a tangible and often more personal touch. Its reliability and established infrastructure make it a lasting method of communication.