Re: Checking if user-mail-address is in To or CC (to avoid an embarrassing social situation) BCC

[James Thomas]

Uwe Brauer writes:

> Let’s assume I write an email to:  
>
> - Arthur,  
> - add John and Richard in CC, and  
> - also include Robert in BCC.  
>
> This is done to ensure that Arthur does not know Robert received a
> copy of the email.
>
> Now, if John replies and uses the "Reply to all" function, everything
> is fine. However, if Robert does the same because he wants to reply to
> John and Richard, Arthur will also receive a copy—revealing that
> Robert was originally BCC'd.
>
> Robert can only avoid this by using a function (before replying to
> all) that checks whether the sender was included in the original
> email’s *To* or *CC* fields.
>
> Here is a function that performs this check, but it only works in the
> *article buffer*.

Have you ruled out using the message-prune-recipient-rules and
message-dont-reply-to-names in (info "(message) Wide Reply")? They may
be enough for you (I haven't read your code).

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