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.
WhoSentWhat - We bring email newsletters from inbox to web
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.