I'm not sure, from the doc:
ftp://metalab.unc.edu/pub/Linux/docs/HOWTO/Mutt-GnuPG-PGP-HOWTO
it sounds like they may be compatible, but it's never explicitly stated.
At 04:25 PM 5/25/00, Mipam wrote:
>Hi FOlks,
>
>I noticed gnupg and pgp5 are not compatible.
>I cannot open mails encrypted with gnupg.
>Is it possible to use gnupg and pgp5 at the same time with mutt?
>I doubt it cause how would it know with to use for a message.
>It's reall not nice that its not compatible....
>Any suggsestions? cause i really would like to encrypt messages
>to gnu and pgp user both.
>Bye,
>
>Mipam