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Using CSS in your email messages
Not all email programs are designed to support CSS. I know that Outlook does, however most webmail interfaces do not, and not all tags are supported. If you want to use CSS to control your typefaces, it's a good idea to also specify font tags as a secondary control.

With that also in mind, layout elements and border textures will often not come through with CSS, or they would be with problems.

Typically, standard HTML even with table tags and font tags is still your best bet with email newsletters.