Four components of letter writing:

1. Heading: Includes the sender's address and the date the letter was written.

2. Salutation: The greeting at the beginning of the letter, such as "Dear [Recipient's Name]."

3. Body: The main content of the letter, where the sender conveys their message or purpose for writing.

4. Closing: The final part of the letter, which may include a closing phrase like "Sincerely" or "Best regards," followed by the sender's signature.

1. Heading
2. Inside Address
3. Body
4. Closing