Hello 

Using still org-7.803 (Xemacs 21.5.33)

I have the following setting 


Email %c: To: %t: Date: %d Subj: %.30s 
`org-email-link-description-format' is a variable declared in Lisp.
  -- loaded from "org"

Value: "Email %c: To: %t: Date: %d Subj: %.30s "

But when the link is inserted, I obtain 

[Email from Uwe Brauer: To: Uwe Brauer: Date: nil Subj: test ]

Is this a bug?