Really Good Emails - A large collection of good product email design.
E-commerce Checklist - Increase conversion rate and revenue of your ecommerce store
Good Sales Emails - Best sales emails from great companies
Startup Stash - A curated directory of 400 resources & tools for startups
Great Email Copy - A dose of emails from around the web.
Swell.is - Customizable, API-first ecommerce platform for innovative brands, startups, and agencies.