The installation of Outlook Express Patch 911567 prevents saved unsent message eml files from being opened as unsent messages.
The installation of Outlook Express Patch 911567 prevents saved unsent message eml files from being opened as unsent messages. Instead, they open as sent messages and cannot be resent. This is because the patch causes Outlook Express to ignore the unsent flag in the message, so the message opens as a sent message, even though it has not been sent.
Uninstall Outlook Express Patch 911567 (April 11, 2006) to restore unsent message functionality