HTC Tilt 8900 - Manual (Page 129)

Working With Company E-mails and Meeting Appointments 129
Notes When both the GPRS and Wi-Fi connections are turned on at the same time,
the Direct Push feature will always opt for Wi-Fi.
Scheduled synchronization
If you do not want to use Direct Push, you can set a regular schedule
for synchronizing Outlook e-mail and information. Set how often to
synchronize during Peak times (which usually refer to your working hours)
when e-mail volume is high, as well as Off-peak times when e-mail volume
is low.
1. In ActiveSync on your device, tap Menu > Schedule.
2. Select a shorter time interval in the Peak times box for you to be able
to receive e-mails more frequently.
3. Select a longer interval in the Off-peak times box.
Tip To set the days and hours that make up your peak and off-peak times, tap
Adjust peak times to fit your schedule.