Messenger and Collabra share many underlying technologies, message formatting, and even a top-level interface structure called the Message Center. At last, each can launch independently of the browser. Other enabling features in Communicator aim at suite integration and support. It's largely based in HTML, it's context-sensitive, and it can be customized by IS departments to contain additional information specific to a corporation. They also give each user the option of customizing Communicator's user preferences and bookmarks.
Security is another area to which Netscape devotes a suite-wide configuration tool.
New preference settings also let you completely disable browser cookies.