On Message with Ben Gross

Infosthetics has some excellent pointers to graphical approaches to understanding email conversations:
email thread visualization

a data visualization technique that displays threads found in email. it combines the chronology of messages with the branching tree structure of a conversational thread. people can observe various attributes of conversations & find relevant messages easily.
the Thread Arcs have a [...]

CommuniGate Systems and Voxilla recently announced availability of a new Internet Communications suite offering SMBs an integrated telephony, email and messaging package.
Based on CommuniGate Systems’ CommuniGate Pro, the package includes a Dell server with Intel dual-core CPUs, VoIP software, IP telephones and adaptors and networking hardware. Initially, the product will ship with either Microsoft Windows [...]

RIM BlackBerry Enterprise Server Express Aimed at SMBs:

Research In Motion announced the BlackBerry Enterprise Server Express, targeted at the SMB market.
Today,
the SMB market generally uses the BlackBerry Internet Solution to
enable BlackBerry devices. The BlackBerry Internet Solution provides
push email, the ability to gather messages from various other email
accounts, and PIM synchronization through connectivity with a desktop
and [...]