Re: [PATCH b4 v2 0/5] b4: Implement BCC support for patch submissions and review

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

Hi Konstantin,

On Sun, Oct 11, 2026 at 10:58:25PM -0700, Dmitry Torokhov wrote:
> This series implements support for sending patch series and review
> replies to blind carbon copy (BCC) recipients.
>
> The work is split into four parts:
> 1. Server-side support in misc/send-receive.py to receive optional BCC
>    envelope destinations via the JSON submission payload and deliver
>    them over SMTP while enforcing anti-abuse limits (max-client-bcc)
>    and public mailing list destination checks (mustdest).
> 2. Client-side support in b4 to inject series-wide BCC addresses
>    directly into envelope recipients (destaddrs) in send_mail() without
>    adding or stripping temporary Bcc: headers. This extends BCC
>    capability across sending tools (b4 send, b4 review, b4 ty) and
>    supports web endpoint submission.
> 3. Per-message Bcc: header handling in send_mail() and the review/bugs
>    TUIs, extracting Bcc: headers into envelope recipients and stripping
>    them before signing and sending while rejecting them on the web
>    endpoint.
> 4. Safety guardrails in ez.py to reject Bcc: trailers in patches and
>    cover letters so they are never treated as person trailers and
>    leaked into public Cc: headers.

Gentle ping on this series. Have you had a chance to take a look or do
you have any thoughts on this approach? Give a holler if you would like
me to send a v3 rebased onto current master (no functional changes, just
minor conflict resolutions in send-receive.py and ez.py).

Thanks.

-- 
Dmitry