message.BCCAddress is a parameter but doesn't send an email to that address

[seantcanavan]

This is probably a vestigial parameter from older days however I got confused by it for a while. I was looking for message.CC or similar and couldn't find it as a parameter so went with message.BCCAddress but that didn't do anything either. Then realized I need to add an extra message.Recipient and set the Recipient.Type to bcc or cc as necessary.