Qualcomm has finalized Eudora Pro 4.0 for the Macintosh (see our review of Eudora Pro 3.0 in TidBITS 357). A demo (6 MB download) is available now, and the full product will be available for sale soon. New features include background sending and receiving of email, improved interface aesthetics, a Make Filter command that simplifies filter creation, dockable windows, and numerous minor tweaks. Qualcomm also added support for Internet standards such as LDAP (Lightweight Directory Access Protocol, an up-and-coming directory services protocol), ACAP (Application Configuration Access Protocol, which enables system administrators to configure Eudora automatically from a server), and viewing and composing of M/HTML messages that include HTML formatting and graphics. This version still lacks IMAP (Internet Message Access Protocol, an alternate way of retrieving email that's popular in large organizations); IMAP support is slated for version 4.1. Eudora Light remains at version 3.1.3 for now.