Working with Mail Items
The MailItem class contains the methods and properties you use to perform tasks with e-mail messages.
Create an e-mail message.
Send an e-mail message.
Respond to new e-mail messages with a custom action.
Flag messages that match specified criteria.
Iterate through all unread messages.
Add a command to the shortcut menu of a message.
For more information about Outlook tasks and the Outlook object model, see Outlook Object Model Overview.