HTMLrev - Free HTML templates for websites, landing pages, portfolios, ecommerce and dashboards
HTMLEmail.io - Responsive HTML email templates for startups & developers
Shade - Super easy color contrast insights and recommendations
Startup Emails - Responsive HTML email templates for startups
GrayGrids - Free and Premium HTML Templates & Bootstrap Themes for - Business, Landing Page, Admin/Dashboards and Resume & Portfolio Websites.
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.