OpenPGP and usability

Werner Koch wk at
Thu Aug 9 05:51:42 CEST 2007

On Wed,  8 Aug 2007 20:20, patrick at said:

> What precisely would you need (or send)? I would be open to implement
> such a "solution" in Enigmail, if it helps!

I am considering to have a new header like

  Gpgol-content-type: application/pgp-encrypted

to supplement the Outlook generated Content-type.  The problem is that
there is no way in Outlook/MAPI to override all content-types - Outlook
has its own idea on how to set them.  Tough it is possible to set the
content-type of the top body, there is no way to set any conent type
below that an thus we would end up with text/plain instead
applaiction/pgp-encrypted for the first part.

I have not yet implemented that in gpgol.  I did some tests last year
and they showed that it will be possible.

It would also be possible to fixup the content type later using an SMTP
proxy but that won't be easy to install.  A new MAPI transport provider
could also fixup such things but I fear that this will raise all kinds
of compatibility problems.



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