What distinguishes a solicited sales letter from an unsolicited sales letter?

A solicited sales letter is characterized by its direct response to a customer's request for information, products, or services. This type of letter is anticipated by the recipient, as they have expressed interest or sought out information pertinent to their needs or requirements. The focus on providing specific information or solutions that the customer has already indicated interest in makes the solicited sales letter effective in building customer trust and fostering a positive business relationship.

In contrast, other types of sales letters, such as unsolicited letters, are sent without any prior request or interaction from the recipient. This approach often lacks the personal touch that solicited letters provide, and recipients may perceive unsolicited letters as intrusive or irrelevant. By being responsive to a customer's request, solicited letters can ensure they address the specific interests and needs of the recipient, increasing the likelihood of a favorable response.