Re: [Jmap] Submission: options for github issue

Gmail does bcc splitting, has for several years now.  About once a year we
get someone complaining that it exposes private data (I didn't want people
to know they were on the losers@ mailing list) or confused that they think
this means everyone got the bcc header.

Apparently it's subtle.

Brandon

On Mon, Apr 24, 2017 at 7:43 AM, Gren Elliot <fatkudu@gmail.com> wrote:

> I have worked on a server that did BCC splitting - i.e. A separate message
> was sent to each BCC user including their address in the BCC header and a
> message sent to all the rest excluding the BCC header.
>
> Regards,
> Gren Elliot
>
> From: Cyrus Daboo <cyrus@daboo.name> <cyrus@daboo.name>
> Reply: Cyrus Daboo <cyrus@daboo.name> <cyrus@daboo.name>
> Date: 24 April 2017 at 15:26:35
> To: Ted Lemon <mellon@fugue.com> <mellon@fugue.com>
> Cc: Adrien de Croy <adrien@qbik.com> <adrien@qbik.com>, jmap@ietf.org
> <jmap@ietf.org> <jmap@ietf.org>, Bron Gondwana <brong@fastmail.fm>
> <brong@fastmail.fm>
> Subject:  Re: [Jmap] Submission: options for github issue
>
> Hi Ted,
>
> --On April 24, 2017 at 10:12:56 AM -0400 Ted Lemon <mellon@fugue.com>
> wrote:
>
> >> we may need to special Bcc headers even if the envelope is preserved -
> >> but then it because a little awkward because of the duplication of
> >> information in two places.
> >
> > Except that the bcc header shouldn't be in the message in the first
> > place, for privacy reasons. So either the message in the JMAP store is
> > different than what was actually sent, or the Bcc info should _only_ be
> > on the envelope.
> >
> > Of course, this requires the MUA to do some creative gymnastics to make
> > it all look good, but such is life.
> >
>
> Most MUAs today store Bcc information in the sent-mail copy of a message -
> of course they never include the Bcc header in the message that was
> actually sent
>
> However it is worth noting that RFC 5322
> (<https://tools.ietf.org/html/rfc5322#section-3.6.3>) does define 3
> different ways that the Bcc header can be used and in two of those the Bcc
> header is included in some fashion in a message being sent. I don't think
> those two modes are common enough to warrant support in JMAP, but I could
> be wrong.
>
> --
> Cyrus Daboo
>
> _______________________________________________
> Jmap mailing list
> Jmap@ietf.org
> https://www.ietf.org/mailman/listinfo/jmap
>
>
> _______________________________________________
> Jmap mailing list
> Jmap@ietf.org
> https://www.ietf.org/mailman/listinfo/jmap
>
>