Eudora 4.3 beta is a robust email client whose features include the ability to filter, redirect, and forward mail, as well as multiple address book formatting options. It supports QuickTime 3.0 and HTML-enriched email, letting you include stylized, formatted text and in-line graphics in your messages. Other features include a three-paned interface; background mail checking and sending; the ability to import existing settings, email, and address books from Microsoft Outlook, Outlook Express, or Netscape Mail programs; a Qualcomm PureVoice plug-in that allows voice message exchanges; and a customizable interface including movable, dockable window groups and toolbars. Eudora also features support for regular expressions in filters, field autocompletion, an automatic spelling checker, and filter that will 'speak' the name and subject of incoming messages (requires a sound card).