4. Discuss both tangible and intangible benefits to the reader. Tangible benefits include tax breaks or memberships for donations; intangible benefits would be prestige, exposure, and goodwill.
Try to convince the reader that he or she should act now; if you fail to do this, the reader will probably put the letter away and never get around to responding.
For example, if your university needs a new computer room, and you need a donation of equipment, describe the computer room and how it would function for the students’ benefit
Your letters should be inductively, or indirectly, organized
You want to state your case before asking for anything
Three different types of letters are persuasive in nature.
Because most sales letters are massproduced, writers often attempt a personal, friendly tone to offset the fact that these letters are unable to target an individual reader.