John Andersen wrote:
> If you use a competent email client you will be offered the option
> of keeping a local copy, which saves the redundant recipient.

Some people deliberately turn this off.  I'm not sure why.  (I can
*sort* of understand it for mailing list mail, but not for "direct"
mail.)

> Further, you should never assume that other recipients do not
> see BCCs.  That it entirely up to the settings of the recipient's
> email client.

If your MUA is actually adding a "real" header with BCC: information,
it's broken.  BCC isn't supposed to be a header in the usual sense; 
it's a way to tell your mail client to add extra SMTP RCPT TO: commands
when sending the message.  The recipients should NEVER see those extra
recipients.

The only way someone might find out about BCC'ed recipients is if they
are the server admin (or have access to the mail logs) and are willing
to spend the effort to wade through the logs tracking the message ID to
see who got a copy.  And that only applies in the case where the
sender's SMTP server is also the destination;  and partially applies if
there are multiple recipients at a remote domain.  If a remote domain
only has one recipient in the list, they will NOT see any information
regarding other recipients.

-kgd
-- 
Get your mouse off of there!  You don't know where that email has been!

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