An exciting and all-new update to the acclaimed Calypso e-mail program, a favorite of e-mail users for years, Courier sets a new standard of excellence for Internet e-mail clients. With the ability to turn off display of HTML mail and an encrypted address book, Courier is immune to current e-mail 'worms' that replicate themselves by harvesting e-mail addresses from the Windows Address Book and forwarding themselves to all of your contacts. Combined with an outstanding array of features and an intuitive, configurable interface, Courier is the premiere Internet e-mail alternative. Features include support for multiple e-mail accounts, a configurable and intuitive interface, turn HTML mail viewing on or off in any window with a single mouse click, 'Color Markers' to help organize your messages, automatic mailbox backup.