What are the key elements to include in an introductory business letter?

The key elements to include in an introductory business letter are the sender’s contact information, the date, the recipient’s contact information, a formal salutation, a concise and engaging introduction, a clear purpose statement, relevant background information, a call to action, and a professional closing. Including these elements will ensure that your business letter is well-structured, informative, and leaves a positive impression on the recipient.