How to Write Business Letters That Get Results
http://www.bly.com/Pages/documents/File136.htm
Well-known copywriter Robert W. Bly provides valuable advice about writing correspondence.

Strategies for Writing Persuasive Letters
http://www.washburn.edu/services/zzcwwctr/
persuasive_menu.html
This step-by-step guide covers the purpose of the persuasive letter, prewriting questions for the writer, writing strategies, and revision tips.

Persuasive Communications: Using You-Attitude and Reader Benefit
http://www.washburn.edu/services/zzcwwctr/you-attitude.txt
Receivers of communications are usually more concerned about themselves than about the writer or the company that person represents. This article describes how to use the "you-attitude" and show reader benefit in your persuasive communication.

A Beginner's Guide to Effective Email
http://www.webfoot.com/advice/email.top.html
This useful guide includes an introduction to email and a discussion about why it differs from ordinary correspondence.

Writing Effective Email
http://jerz.setonhill.edu/writing/e-text/e-mail.htm
This document offers 10 tips to help you write effective professional emails. If you want to be taken seriously by professionals, you should know email etiquette.