when you send an email as text, it will be displayed using the default font that their email client uses to display text, a standard text email doesn't contain any formatting info.... like dotnetboy said.. you need to sent it as HTML, so you can mark up the text with your own desired font.. keep in mind the end user needs to have that font on their system to view it properly.. otherwise their email client will render the HTML with a default font like arial or tahoma...