Email-Geni.us provides for both HTML and Plaintext content in the same email. The rich-text HTML capabilities are enabled through FCKeditor, an open-source editor built right in to Email-Geni.us, providing most of the commonly used functions from desktop editors like Microsoft Word.
Using FCKeditor, you can write text, format it, create tables, insert images and links, and much more. These capabilities are all managed from an intuitive graphical toolbar above the editing area of the email, and are thoroughly documented in an online User Guide.