What does the body of a letter primarily do?

The body of a letter primarily articulates the main message, serving as the core content where the writer communicates their purpose, thoughts, or information to the recipient. This section is crucial because it expands on the introduction provided in the opening lines, offering elaboration, details, and context that lay out what the sender wants to convey.

While background information might be included in the body, its primary function is to ensure that the central idea of the letter is clear and well-communicated. Additionally, the body may provide necessary explanations and supporting details that reinforce the main message, making it easier for the recipient to understand the writer's intent. It is also distinct from other parts of a letter, such as the conclusion, which summarizes the message or indicates a closing sentiment, or the sender's address, which is usually included at the top of the letter.