C#

//create an instance of Outlook
Outlook.Application olApp = new Outlook.Application();
//create a MAPIFolder object pointed to the default inbox
Outlook.MAPIFolder inBox = (Outlook.MAPIFolder)olApp.ActiveExplorer().Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);
//create an Items collection and pass in the inbox items
Outlook.Items Inboxitems = inBox.Items;

//loop through the items that are MailItem and collect the size of the items
//to get the total size of the inbox
foreach (Outlook.MailItem item in Inboxitems.OfType<Outlook.MailItem>())
{
     InboxSize = InboxSize + item.Size;                                      
}

Reetu Singh wrote:

extract attachments stored in xml