Hi,
I have a situation where I want to modify an existing item in Outlook,
but I cant get the recipients to work properly when using Redemption.

First I create a new mail item, add some properties (like subject,
recipients etc),  get hold of the EntryID and exit.
Later on I reconnect and find the mailItem using GetItemFromID and
start modifying this Item.

Changing the Subject works just fine, but I cant seem to get the
Recipients modified correctly.
When I add a recipient it is apparently added, using OutlookSpy to
view the "CurrentItem.To" property I can see all my recipients.
However, the ones I added when I modified the Item is not visible in
Outlook and if I manually enter a new mailaddress (in Outlook), the
ones I added in the modification code disappears from the
"CurrentItem.To" property in OutlookSpy as well.

If I use Outlook directly (no Redemption code), I can get this
working, but I dont want the Security message box, so it is not really
an alternative.

I created a small sample program that demonstrates this problem:

       using Outlook = Microsoft.Office.Interop.Outlook;
       using Interop.Redemption;

       private void main()
       {
           string entryID = RedemptionCreateTestMail();
           RedemptionAddRecipient(entryID);
       }

       private string RedemptionCreateTestMail()
       {
           Outlook.Application olApp = new Outlook.Application();
           Outlook.NameSpace olNS =
(Outlook.NameSpace)olApp.GetNamespace("MAPI");
           olNS.Logon("", "", false, true);

           Interop.Redemption.SafeMailItem safeItem = new
SafeMailItem();
           Outlook.MailItem mailItem =
(Outlook.MailItem)olApp.CreateItem(Outlook.OlItemType.olMailItem);
           safeItem.Item = mailItem;

           safeItem.Recipients.Add("xxx@zzz.zz");
           safeItem.Recipients.ResolveAll();
           mailItem.Subject = "Mail Created";
           mailItem.Save();
           mailItem.Display(false);

           string entryID = mailItem.EntryID;

           mailItem = null;
           safeItem = null;
           olNS.Logoff();
           olNS = null;
           olApp = null;

           return entryID;
       }

       private void RedemptionAddRecipient(string entryID)
       {
           Outlook.Application olApp = new Outlook.Application();
           Outlook.NameSpace olNS =
(Outlook.NameSpace)olApp.GetNamespace("MAPI");
           olNS.Logon("", "", false, true);

           string storeID =
olNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox).StoreID;
           Outlook.MailItem mailItem =
(Outlook.MailItem)olNS.GetItemFromID(entryID, storeID);

           Interop.Redemption.SafeMailItem safeItem = new
SafeMailItem();
           safeItem.Item = mailItem;
           safeItem.Recipients.Add("yyy@zzz.zz");
           safeItem.Recipients.ResolveAll();

           mailItem.Subject = "Attached to mail: " + entryID;

           mailItem.Save();
           mailItem.Display(false);

           mailItem = null;
           safeItem = null;
           olNS.Logoff();
           olNS = null;
           olApp = null;
       }

Bjorn Tore