Solicited proposals offer more flexibility,as the recipients aren't expecting to receive them and thus,require you to convince your readers that a problem or opportunity exists.

Question

Quizplus · Accepted Answer

Solicited proposals are generally prepared at the request of external parties that require a product or a service, but they may also be requested by such internal sources as management or the board of directors.

Solicited Proposals Offer More Flexibility,as the Recipients Aren't Expecting to Receive