3Com Professional Handbook To access the additional filter settings:

Chapter 1: Mail page 27
Specialized filters work on the premise of ignoring or retrieving
messages that contain specific information in their header fields.
To create a specialized filter, you must decide whether you want to
ignore or retrieve certain messages. Then, based on that decision,
you must tell your PalmPilot what it needs to look for in the To,
From, and/or Subject header fields to single out those messages.
You use the Additional Filter settings from the HotSync Options
dialog to define the elements of a specialized filter.
To access the additional filter settings:
■From the HotSync Options dialog, tap the Filter setting. The
HotSync Options dialog changes to display additional filter
settings, as shown in the following diagram:
Tap here to display
Filter options
Ignoring or Receiving Messages
The first step in establishing a specialized filter is to determine
whether you want to ignore or retrieve certain messages. In
general, you control the amount of mail you receive during
synchronization by selecting either to ignore or retrieve messages
that match the information you specify.