If the same sent item is viewed in Outlook Web Access or Cached Exchange Mode is disabled, the signature is visible on the sent item.Explanation: The Sent Items Update feature will only update the sent item that resides in the users mailbox on the Microsoft Exchange server.
In this mode, a copy of your mailbox is saved on your computer.
Once Outlook is started and the cache has been updated, the synchronization is taking place based on timers and not on folders. Note 1: When Outlook is placed in “Work Offline” mode and you initiate a manual send/receive (keyboard shortcut F9), the currently selected folder does not have an affect on the synching order.
So if this is a non-default folder, it will be treated as a “User-created folder”.
Scenario: You have enabled Sent Items Update in Exclaimer Signature Manager Exchange Edition so that so that a signature is visible when the sender views an email in their Sent Items folder.
When Cached Exchange Mode is enabled in Microsoft Outlook, no signature is visible on the sent item.