diff --git a/etc/init.lisp b/etc/init.lisp
index 9d67b51..b3d7cf0 100644
--- a/etc/init.lisp
+++ b/etc/init.lisp
@@ -640,8 +640,13 @@
   "Copy the selected link to clipboard"
   (copy-link-to-clipboard specials:*open-attach-window*))
 
+(defun open-attachment-ignoring-cache ()
+  (open-message-attach-perform-opening :ignore-cache t))
+
 (define-key "C-J"       #'open-message-attach-perform-opening           *open-attach-keymap*)
 
+(define-key "O"         #'open-attachment-ignoring-cache                *open-attach-keymap*)
+
 (define-key "C-c"       #'copy-from-attach-window-to-clipboard          *open-attach-keymap*)
 
 (define-key "a"         #'open-all-message-attachments                  *open-attach-keymap*)
@@ -650,7 +655,7 @@
 
 (define-key "j"         #'open-message-attach-go-down                   *open-attach-keymap*)
 
-(define-key "k"          #'open-message-attach-go-up                    *open-attach-keymap*)
+(define-key "k"         #'open-message-attach-go-up                     *open-attach-keymap*)
 
 (define-key "q"         #'close-open-attach-window                      *open-attach-keymap*)
 
diff --git a/src/open-attach-window.lisp b/src/open-attach-window.lisp
index c41d21c..2c2c4e3 100644
--- a/src/open-attach-window.lisp
+++ b/src/open-attach-window.lisp
@@ -136,7 +136,7 @@
     (when matchedp
       (first-elt res))))
 
-(defun open-attachment (url)
+(defun open-attachment (url &key (ignore-cache nil))
   (labels ((add-extension (cached-value)
              (strcat (to-s cached-value) (get-extension url)))
            (fill-cache (url)
@@ -164,7 +164,8 @@
                   (open-attachment url)))
             (let ((cached-file (os-utils:cached-file-path (add-extension cached))))
               (if (or (not (fs:file-exists-p cached-file))
-                      (<= (fs:file-size cached-file) 0))
+                      (<= (fs:file-size cached-file) 0)
+                      ignore-cache)
                   (progn
                     (db:cache-invalidate url)
                     (open-attachment url))
diff --git a/src/ui-goodies.lisp b/src/ui-goodies.lisp
index d9a7723..8cd31b7 100644
--- a/src/ui-goodies.lisp
+++ b/src/ui-goodies.lisp
@@ -1494,10 +1494,10 @@ It an existing file path is provided the command will refuse to run."
 (defun open-message-attach-go-up ()
   (open-message-attach-move -1))
 
-(defun open-message-attach-perform-opening ()
+(defun open-message-attach-perform-opening (&key (ignore-cache nil))
   (when-let* ((selected-line (line-oriented-window:selected-row *open-attach-window*))
               (url           (line-oriented-window:normal-text selected-line)))
-  (open-attach-window:open-attachment url)))
+  (open-attach-window:open-attachment url :ignore-cache ignore-cache)))
 
 (defun close-open-attach-window ()
   (close-window-and-return-to-threads *open-attach-window*))