Newsletter Design Clinic
Three questions to guide a newsletter critique, from About.com's guide to Desktop Publishing

Hot Trends in Newsletter Design
Visual examples of what's hot, and notes about what's not, in current newsletter design. Use the examples to give your newsletter a makeover.

How to Spot a Bad Newsletter
Common pitfalls and effective solutions in newsletter design.

Newsletter Makeover
A before and after look at a newsletter in need of a makeover, from NewsletterInfo.com.

Single Page Newsletter Template
Download a template for a "News in Brief" single-sheet newsletter.