OpenPGP parts and plain text in the same email

[Alex (via GPGTools)]

Hi there,

On 18.08.2011, at 20:39, Ingo Klöcker wrote:
> why should it support something  strange like a multipart/alternative message with a text/plain part and  a PGP/MIME part.

isn't this what the message "This is an OpenPGP/MIME signed message (RFC 2440 and 3156)" is about? If this text is shown by an incompatible client it could be replaced by the original text.

> Apart from that I'm pretty sure that only very old versions of Outlook 
> [Express] have those problems.

Is there a (reliable) list of incompatible clients?

Best regards, Alex

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