I am presuming you have that option selected? Right click the Outlook icon in the notification area and ensure it is checked.

--
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, monkeyBite asked:

| I've searched the groups and found people experiencing problems with
| the new mail notification in Outlook 2007. The main problem is that
| the mail icon in the system tray will only appear when new mail
| arrives in the DEFAULT store inbox and stays there. If a rule moves
| the email to a different folder, no mail icon will show up, nor will
| it show up if email is delivered to an INBOX, but one that is not the
| default store (i.e. when using an exchange account and a POP
| account).
|
| So....I'm using the final Enterprise version, and the problem still
| exists. Rules can be created to show the desktop alert notification
| and also to play a sound, but if you aren't sitting in front of your
| computer that doesn't help much.
|
| Has anyone found a way to get the new mail icon to show up in the
| system tray when ANY new mail arrives?
|
| Thanks....