Really Good Emails - A large collection of good product email design.
HTMLEmail.io - Responsive HTML email templates for startups & developers
Good Email Copy - Email copy from great companies.
Startup Emails - Responsive HTML email templates for startups
Great Email Copy - A dose of emails from around the web.
Stripo - Stripo is an all-in-one email design platform. We enable our clients to build emails of any complexity, including interactive AMP emails, really fast and easy.