Universally Supported CSS and HTML for Email Designs HTML and CSS in Email Design If you're creating HTML emails – then here's a table you'll want to bookmark. If you’ve followed our blog – you know that top email clients like Gmail and Outlook 2007 and beyond only support about 50% of all html and css. That’s why your well crafted email design that follows otherwise best-practices for website design – just might look.. well, bad. Below – with help from www.emailonacid.com – we’ve summarized the universally supported html and CSS tags. These can be used and will render properly in any email client (excluding Lotus Notes 6.5/7.0. Notes supports the following HTMLbut only supports the CSS properties with an *). Also note – the CSS properties below should be used INLINE (not in an embedded style sheet, but with a style="…" directive), since some clients like Gmail strip embedded style sheets. UNIVERSALLY SUPPORTED CSS PROPERTIES (INLINE ONLY) background background-color border border-bottom border-bottom-color border-bottom-style border-bottom-width border-color border-left border-left-color border-left-style border-left-width border-right border-right-color border-right-style border-right-width border-style border-top border-top-color border-width * color * display * font * font-family * font-size * font-style font-variant font-weight height letter-spacing line-height * list-style-type padding padding-bottom padding-left padding-right padding-top table-layout * text-align * text-decoration text-indent text-transform vertical-align HTML TAG ATTRIBUTES (UNIVERSALLY SUPPORTED) a class, href, id, style, target b class, id, style br class, id, style div align, class, dir, id, style font class, color, face, id, size, style h1 align, class, dir, id, style h2 align, class, dir, id, style h3 align, class, dir, id, style h4 align, class, dir, id, style h5 align, class, dir, id, style h6 align, class, dir, id, style head dir, lang hr align, size, width img align, border, class, height, hspace, id, src, style, usemap, vspace, width label class, id, style li class, dir, id, style, type ol class, dir, id, style, type p align, class, dir, id, style span class, id, style strong class, id, style table align, bgcolor, border, cellpadding, cellspacing, class, dir, frame, id, rules, style, width td abbr, align, bgcolor, class, colspan, dir, height, id, lang, rowspan, scope, style, valign, width th abbr, align, background, bgcolor, class, colspan, dir, height, id, lang, scope, style, valign, width tr align, bgcolor, class, dir, id, style, valign u class, id, style ul class, dir, id, style Source: http://www.pinpointe.com/blog/email-campaign-html-and-css-support