An interactive HTML email is a powerful tool. Businesses can use them for promo deals, freelancers might use them to pitch their services to potential clients, and grandchildren can bring a smile to their grandparents’ faces with a cute custom design. The only two technologies you’ll need to build a custom email from scratch are HTML and inline CSS. All you need to do is to get a design in mind, analyze it in the form of table rows and columns, and you’re good to start building. In this article, you’ll learn a step-by-step method to build and send a custom HTML email.