How to enable Bcc in Outlook Express
The first step is to start to create a new message.
1. File >new message or click the new message icon on the toolbar. The
new message form will appear as below:

2. Click view and enable all Headers. This toggles the Bcc line on for all new
messages

3. You should now see the Bcc line. As shown below

All subsequent messages will display the Bcc line until you disable it by
turning the all headers off.
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