HTML

HTML stands for HyperText Markup Language and is the foundational markup language of the web. Every web page is built on HTML at its core, complemented by CSS for presentation and JavaScript for interactive features. Emails are usually built in HTML as well so layout, images and fonts can be rendered cleanly.

Structure of an HTML file

An HTML document consists of nested elements marked with tags in angle brackets. The root element is html, with head for metadata and body for visible content. Headings, paragraphs, lists, links, images, forms and semantic containers like article or section form the structure. HTML5 is the current established version.

Practice and pitfalls

Clean HTML is an important foundation for accessibility, SEO and performance. Semantically appropriate tags help search engines and screen readers understand the content. Validation tools check the structure. In emails, the rules are stricter because many mail clients support only a limited subset of HTML and CSS, so tables and inline styles often remain mandatory.

Context in daily marketing

In day to day marketing, you encounter HTML when building landing pages, adapting templates and creating newsletters. In JD Mail, HTML templates form the basis of every campaign. Blocks such as headers, hero images, text sections and call to action buttons are assembled modularly so you do not have to code every mail by hand.