AI-Driven Email Marketing Designer

I need an art-directed, conversion-focused email campaign built from scratch and I need it fast. The priority right now is a set of responsive HTML emails that look as polished on mobile as they do in desktop clients, complete with persuasive copy, dynamic visuals, and clear calls-to-action... (Budget: $250 - $750 USD, Jobs: CSS, Email Campaign, Email Handling, Email Marketing, Graphic Design, HTML, HTML5, Website Design)