#24741
How to Create a High-Impact Sales Letter — FAST 
A sales letter must capture the reader's attention immediately or it won't get read. Most people accomplish this by stating their biggest benefit at the top of their letter. I've found something that works even better.
Leduc, Bob. Nine Yards (2002). Articles>Business Communication>Correspondence>Marketing
#30087
How to Write Successful Direct Marketing Letters 
Direct marketing in the form of direct mail is used by almost every company whether it is the local service station or shoe repair shop or a Fortune 500 company. Unlike documentation that instructs or describes a process, marketing materials must persuade as well as inform. Increasingly, technical communicators’ responsibilities are being expanded to include marketing materials such as advertisements and direct mail. Writing successful direct marketing letters or advertisements can be easier by using a 10-point guide that uses the principles of attracting attention, arousing interest. creating desire and asking for action.
Smith, Gem. STC Proceedings (1999). Articles>Business Communication>Correspondence>Marketing
#28054
Incompetent Email Marketing = Lost Future Opportunities
Lack of personalization made an email newsletter completely useless to the recipient, damaging long-term customer relationship efforts.
Nielsen, Jakob. Alertbox (2006). Articles>Business Communication>Correspondence>Marketing
