Email to dead letter channel

[Thomas.Thiele]

Hi,

I send an email with formatting, html or rtf and a pdf as attachment.
But in the dead letter file there is only plain text.
How can I save the orginal email in case of exception?

Code so far in configure():

errorHandler(deadLetterChannel(String.format("file://%s", 
EMAIL_DEADDIRECTORY)).useOriginalMessage());

from(("imap:// ...").routeId("EmailInput")
   .throwException(IllegalArgumentException.class, "test")
   .to("direct:emailin");