1. A method for displaying a message from a first user to a second user, said method including: receiving the message from the first user in a system of the second user, the message including text in an intended font and metadata, the metadata including a link to a font source outside of the system of the second user; determining whether the intended font is on the system of the second user; obtaining rendering instructions from the font source if the intended font is not on the system of the second user, the rendering instructions including instructions how to display the text in the intended font on the system of the second user without downloading the intended font to the system of the second user; and displaying the text in the intended font on the system of the second user using the rendering instructions, wherein the rendering instructions are specific to the message and are incompatible with other messages received by the system of the second user, and wherein the message and the metadata do not include a style sheet.
5. The method according to claim 1 , wherein the metadata further includes a security key for accessing the font source, and wherein the font source can only be accessed with the security key.