No Hidden-Recipient support in GPGME?

Bernhard Reiter bernhard at
Tue Sep 2 14:35:35 CEST 2008

On Monday 01 September 2008 16:35, David Shaw wrote:
> > To me understanding, using a blind carbon copy on emails requires
> > the email application to send out several versions of the email:
> > 1) encrypted to all visible recipients
> > n invisible recipients*) encrypted to all visible recipients and one  
> > out of n
> > invisible.
> Exactly.  This can be difficult for those mail programs that allow the  
> MTA to handle all addressing, since it involves sending a message to  
> user "b" (an encrypted + hidden user), but with "a" (an unencrypted  
> users) in the To: list.

Are there settings where this is common?
Usually the MTA would act on the envelope, not the data which includes
the visible "To:".


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