MJML - The open source framework for responsive emails
Elucify - A completely free software tool that uses crowdsourced data to find business email addresses
Email Design System for Sketch - Sketch file with 10 email templates for designers
Lead Forensics - B2B website analytics and lead generation.
HTMLEmail.io - Responsive HTML email templates for startups & developers
KiteDesk - Use KiteDesk sales prospecting software to generate leads from our premium data marketplace. Then reach prospects and build a sales pipeline with organized Lead Lists. Syncs direct with CRM too!