Designing an HTML email that renders consistently across the major email clients can be very time consuming. Support for even simple CSS varies considerably between clients, and even different versions of the same client.
We've put together this CSS support in email clients guide to save you the time and trouble of figuring it out for yourself. With 21 different sets of results, all the major email systems are covered, both desktop applications and webmail.
HTML emails are the subject of many discussions. This article doesn't discuss about weither or not HTML messages have their place in our mailboxes, but about a problem web developers face when creating HTML emails: the email client support of CSS.
The jQuery Media Plugin supports unobtrusive conversion of standard markup into rich media content. It can be used to embed virtually any media type, including Flash, Quicktime, Windows Media Player, Real Player, MP3, Silverlight and PDF into a web page.
The Email Standards Project is here to help designers understand why web standards are so important for email, while working with email client developers to ensure that emails render consistently.