I believe I have found a major bug in Outlook. I say major because when this issue involves sending emails as BCC. When you send an email as BCC you are sending it because you don’t want the recipient to be able to see who else it was sent to.
If you follow the steps below the recipient is able view the names of all the BCC recipients.
To reproduce the issue
Go to your ContactsRight click contact and select New Message to ContactMove the name from To field to the BCC field.
Click View->OptionsIn the Contacts field is the name of the BCC recipient which was originally the To recipient. The Contacts field should be empty instead.
This information is viewable to the recipient if they print it out or by making the message editable (forward, reply or reply to all) and clicking the message's option button. After clicking the option button the Contacts field will display the names of the BCC recipients. If the recipient prints the email out it will print the usual fields of From, Sent, To, and Subject. The print out will also display a Contacts field which contains all the BCC recipients names.
There are a couple of workarounds:
Clear the Contacts field prior to sending if using the steps above
Create a new email in Outlook by going to File->New Message and populate the BCC field by clicking the BCC button
It appears that Outlook is not correctly clearing the Contacts field after moving the name from To to BCC. This only happens when you right click a contact and select New Message to Contact.
I have researched this issue and have not found any information about it including Microsoft.
Lesson learned, be careful when you send an email BCC because it might not be blank.
