Most concrete verification steps are likely only taken on the e-mail
address in the first place, and e-mail addresses render more
intelligibly than arbitrary User IDs in the first place.

Signed-off-by: Daniel Kahn Gillmor <>
 emacs/notmuch-crypto.el | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/emacs/notmuch-crypto.el b/emacs/notmuch-crypto.el
index db7cb75d..5c260a7a 100644
--- a/emacs/notmuch-crypto.el
+++ b/emacs/notmuch-crypto.el
@@ -119,14 +119,19 @@ mode."
      ((string= status "good")
       (let ((fingerprint (concat "0x" (plist-get sigstatus :fingerprint)))
+           (email (plist-get sigstatus :email))
            (userid (plist-get sigstatus :userid)))
-       ;; If userid is present it has full or greater validity.
-       (if userid
+       ;; If email or userid are present, they have full or greater validity.
+       (if email
-             (setq label (concat "Good signature by: " userid))
+             (setq label (concat "Good signature by: " email))
              (setq face 'notmuch-crypto-signature-good))
-         (setq label (concat "Good signature by key: " fingerprint))
-         (setq face 'notmuch-crypto-signature-good-key))
+         (if userid
+             (progn
+               (setq label (concat "Good signature by: " userid))
+               (setq face 'notmuch-crypto-signature-good))
+           (setq label (concat "Good signature by key: " fingerprint))
+           (setq face 'notmuch-crypto-signature-good-key)))
        (setq button-action 'notmuch-crypto-sigstatus-good-callback)
        (setq help-msg (concat "Click to list key ID 0x" fingerprint "."))))
      ((string= status "error")
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