Outlook How-To: Add a custom property to the UserProperties collection of an e-mail item
Here is what i get from Immediate window..?item.UserProperties.Add(“Migrated123″, Microsoft.Office.Interop.Outlook.OlUserPropertyType.olKeywords, false, 1) Embedded interop type ‘Microsoft.Office.Interop.Outlook.OlUserPropertyType’ is defined in both ‘Mic...