Newsletter Guide - A 201 guide for taking your newsletters to the next level
Email Inspire - Discover the best of email design and marketing — Browse email newsletters from top brands.
Newsletters by Refind - The easiest way to email a link digest to your fans
WhoSentWhat - We bring email newsletters from inbox to web
Newsletter Crew - Podcast, blog, and community for newsletter creators.
EmailWay - Collection of the most insightful and informative email newsletters from across a wide spectrum of industries and interests