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Inside Microsoft® Exchange Server 2007 Web Services by Huw Upshall, Mark Taylor, Ben Spain, Michael Mainer, David Sterling

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Exchange Web Services Indentifiers

Usually, the mailbox itself isn’t terribly interesting. However, the contents of the mailbox are. Each item or folder within a mailbox must have a way to distinguish it from another item or folder within the mailbox (and even outside of the mailbox). You make this distinction by using identifiers, of which there are three basic categories in Exchange Web Services: folder, item, and attachment ids. Each of these identifiers uniquely identifies its related object.

Folder Ids

Not surprisingly, a folder id identifies a folder within a mailbox. Most mailboxes have some well-known folders such as the Inbox, Sent Items, and Deleted Items. Due to their ubiquitous nature, these folders seem a bit more "distinguished" than ...

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