Next time, please do not put Outlook 2007 in your subject line if you're building an add-in for both Outlook 2003 and 2007. That will avoid a lot of unnecessary detours.

The normal way to create a custom form is to use the form designer in Outlook, setting the icon on its (Properties) page. In add-in context, you can save it as an .oft file and distribute it as a resource. Use that file with the CreateItemFromTemplate to return a new item, then use that item's FormDescription.PublishForm command to publish to the user's Personal Forms library. Of course, Extended MAPI has its own ways -- and its own forums (not this one).

However, generally you should not use a custom form to create messages unless they are going only to recipients internal to the same Exchange organization. If you want to change the icon for the sender, change the MessageClass when the item reaches the Sent Items folder.

Thank you for your answer. BTW, I can't use Outlook 2007 specific form
region feature because I mean to install the add-in for Outlook 2003
and 2007.

I created .cfg file manually referring MSDN article. Is there another
"right" way to create and install custom form ?

Actually I have several e-mail addresses and certain icon for each of
them. My addin should to create custom form (if not exists) with
specific icon and then set message class to new one for each arrived
mail with specific e-mail address.

On 25 апр, 19:04, "Sue Mosher [MVP-Outlook]" <sue...@outlookcode.com>
wrote: