What is the difference in an application letter when you are prospecting and when a letter is solicited by the organization?

What will be an ideal response?

The best approach for an application letter depends on whether you are applying for an identified job opening or are prospecting—taking the initiative to write to companies even though they haven't announced a job opening that is right for you. In many ways, the difference between the two is like the difference between solicited and unsolicited proposals. The writer knows exactly what qualifications the organization is seeking and can "echo" those attributes back in his letter. Writing a prospecting letter is more challenging because you don't have the clear target you have with a solicited letter, and the message is unexpected. You will need to do more research to identify the qualities that a company would probably seek for the position you hope to occupy. Also, search for news items that involve the company, its customers, the profession, or the individual manager to whom you are writing. Using this information in your application letter helps you establish common ground with your reader—and it shows that you are tuned in to what is going on in the industry.