How should the introduction of a letter be structured?

The introduction of a letter is crucial as it sets the tone and the context for the entire correspondence. Establishing the purpose clearly is essential because it allows the recipient to quickly understand what the letter is about and what the sender intends to communicate. A well-written introduction provides a focused opening that captures the recipient's attention and directs them toward the main subject matter of the letter.

While summarizing the entire letter or providing a detailed background could be useful in some contexts, these elements would typically belong in the body of the letter instead of the introduction, where clarity and directness are prioritized. Listing multiple topics can lead to confusion for the reader, as it deviates from maintaining a singular focus, which is important in the introductory section. Thus, a clearly established purpose in the introduction ensures that the letter is straightforward and effective in conveying its message.