New mail alert for shared mailbox outlook 2007

Question

I am trying to create a popup mail alert for a shared mailbox in Outlook 2007. The following code doesn't work. why?

private Microsoft.Office.Interop.Outlook._Explorers Explorers;
private Microsoft.Office.Interop.Outlook.NameSpace outlookNamespace;
private Microsoft.Office.Interop.Outlook.MAPIFolder mFolder;
private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
  Explorers = this.Application.Explorers;         
  outlookNamespace = this.Application.GetNamespace("MAPI");         
  mFolder = outlookNamespace.Folders["Mailbox -AdditionalMailBox"].Folders["Inbox"];  
  mFolder.Application.NewMailEx += new  ApplicationEvents_11_NewMailExEventHandler(Application_NewMailEx );
}
private void Application_NewMailEx(string EntryID)
{
  MessageBox.Show("New MailReceived!");
}

score 1 · Accepted Answer · edited May 23 '17 at 12:19

In order for your event handlers to survive garbage collection - you need to ensure that the objects that contain your events are kept alive by adding them as a private member variable. Try adding an Application private class variable and your event subscription should work just fine. See related SO post for more details.

private Microsoft.Office.Interop.Outlook.Application application;
private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
    application = this.Application;
    Explorers = application.Explorers;         
    // ...         
    application.NewMailEx += new  ApplicationEvents_11_NewMailExEventHandler(Application_NewMailEx );
}

The other issue you discovered is that NewMailEx only fires for your primary mailbox - not secondary mailboxes as confirmed in this forum post. You will need to rely on the Folder.Items event ItemAdd.

private Outlook.Items mFolderItems;
private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
    // ...
    mFolderItems = mFolder.Items; // avoid GC for ItemAdd event
    mFolderItems.ItemAdd += new ItemsEvents_ItemAddEventHandler(mFolder_ItemAdd);
    // ...
}        
private void mFolder_ItemAdd(object addedItem)
{
  Outlook.MailItem newItem = addedItem as Outlook.MailItem;
}

Application only subscribes new mail in the primary mailbox. It didn't work for the additional mailbox. — Shnerka Zoid, Mar 13 '12 at 14:04
@ShnerkaZoid - you are correct - `NewEmailEx` only works on the primary mailbox, see edits above. — SliverNinja - MSFT, Mar 13 '12 at 14:26
@ShnerkaZoid - glad it helped you out! Please accept this as an answer so that others may benefit. =) — SliverNinja - MSFT, Mar 14 '12 at 13:35
Click the tick (**check mark**) on left under the vote arrows. — SliverNinja - MSFT, Jul 23 '12 at 14:00

New mail alert for shared mailbox outlook 2007

1 Answers1