Weavr Cafe - Weavr is a platform to build active learning communities.
Email Inspire - Discover the best of email design and marketing — Browse email newsletters from top brands.
Adapt or Die - Learn how to protect your business from losing sales
EmailWay - Collection of the most insightful and informative email newsletters from across a wide spectrum of industries and interests
Intercom on Marketing - The marketing book for startups
Really Good Emails - A large collection of good product email design.