Thanks for your response. I'm using gmail and when I go to the gmail web interface, the sent email appears as a single email with two BCCs as expected. But, a

Thanks for your response. I'm using gmail and when I go to the gmail web interface, the sent email appears as a single email with two BCCs as expected. But, after more investigation it looks like you're right. My outgoing headers appear different than incoming if I send myself a test email.