R. David Murray added the comment:
smtplib in 2.7 doesn't know anything about RFC822 or any of the replacement
RFCs. sendmail accepts a *string*, and doesn't understand or modify anything
about that string except the newlines. It is your responsibility not to *add*
the BCC header. What you
New submission from zoof:
When I try sending an email, using smtplib, with the bcc header set, the bcc
header is included in messages send to the "to" and "cc" addresses. According
to section 4.5.3 of rfc 822:
> The contents of this field are not included in copies of the message sent
to
