Some users might need to access OWA through a slow dial-up connection. OWA provides them with many ways to improve and speed up their OWA experience and access to mail. There are options that can be configured from the server and through group policy to improve access speeds, but users can help speed up their access whether or not the server-side improvements are implemented. Major options are
Choose basic mode when logging into OWA
Set low number of messages to be displayed on the page
Turn off the reading pane
Turn on two-line viewing
Enable the blocking of Internet content