A letter of inquiry, also known as a prospecting letter or letter of interest, is sent to companies that may be hiring, but, haven't listed specific job openings.
Your inquiry letter should contain information on why the company interests you and why your skills and experience would be an asset to the company. Also provide information on how you will follow-up and where you can be reached.
Inquiry Letter Resources
Also Known As: prospecting letter, letter of interest, cover letter
James wrote a letter of inquiry to send with her resume.