Update Time:
30 Seconds
1 Minute
2 Minutes
3 Minutes
4 Minutes
5 Minutes
6 Minutes
7 Minutes
8 Minutes
9 Minutes
10 Minutes
15 Minutes
20 Minutes
30 Minutes
45 Minutes
60 Minutes
For Hotmail or MSN, an update time of 5 minutes or more is recommended
For POP3, an update time of 1 minute or more is recommended
For exchange server, an update time of 30 seconds or more is recommended