Accordably - Competitor monitoring made easy.
Email Inspire - Discover the best of email design and marketing — Browse email newsletters from top brands.
Clootrack - Clootrack discovers your customer perceptions real time.
EmailWay - Collection of the most insightful and informative email newsletters from across a wide spectrum of industries and interests
Rivalfox - Rivalfox gives you real-time information to help you do your job better. We monitor your competitors’ digital marketing strategies so that you don’t fall behind the pack.
Really Good Emails - A large collection of good product email design.