Represents a post in a public folder that others may browse. Unlike a MailItem object, a PostItem object is not sent to a recipient. You use the Post method, which is analogous to the Send method for the MailItem object, to save the PostItem to the target public folder instead of mailing it.
Using the PostItem Object
Use the CreateItem method to create a PostItem object that represents a new post. The following example returns a new post.
Set myItem = myOlApp.CreateItem(olPostItem)
Use Items(index), where index is the index number of a post or a value used to match the default property of a post, to return a single PostItem object from a public folder.