說服信，顧名思義，就是說服對方去做一件事情。接受方可能覺得提出要求一方的提議不會給自己帶來多大的好處，或是不愿改變習慣做法。這時一封措辭恰當的說服信就會起到很大的作用。

說服信的一般格式如下：

1. Arouse your reader's attention by
- stating a problem that affects him or her
- promising something of benefit
- presenting an interesting fact
- raising a rhetorical question
- introducing a topic of concern

2. Create interest in your topic by
- showing the reader that a solution to a problem is possible
- picturing the reader enjoying the benefits
- emphasizing the reader's concern

3. Request the desired actions by
- providing sufficient evidence to convince readers of the proposal's merits
- developing the sales appeals
- convincing the reader to accept the fact that the action proposed is worthwhile

4. Motivate the readers to act by
- telling the reader exactly what action to take
- re-emphasizing benefits

（改編自：《國際商務寫作教程》，對外經濟貿易大學出版社 英語點津 Annabel 編輯）