diff --git a/app/admin/sync/mimecast/page.tsx b/app/admin/sync/mimecast/page.tsx
index bd16814..832624b 100644
--- a/app/admin/sync/mimecast/page.tsx
+++ b/app/admin/sync/mimecast/page.tsx
@@ -655,6 +655,21 @@ function MessageAnalysisDialog({ message, onClose, onRelease, releasing }: {
               <span className="text-muted-foreground">{message.reason}</span>
             </div>
           )}
+          <div className="grid grid-cols-[72px_1fr] gap-2 px-3 py-2">
+            <span className="text-muted-foreground text-xs pt-0.5">Size</span>
+            <span className="text-muted-foreground">
+              {message.size ? `${(message.size / 1024).toFixed(1)} KB` : '—'}
+              {message.hasAttachments ? <span className="ml-2 inline-flex items-center gap-0.5 text-xs"><Mail className="w-3 h-3" /> has attachments</span> : ''}
+            </span>
+          </div>
+        </div>
+
+        {/* Body not available note */}
+        <div className="rounded-md border border-dashed px-3 py-2.5 text-xs text-muted-foreground flex items-start gap-2">
+          <Info className="w-3.5 h-3.5 mt-0.5 flex-shrink-0" />
+          <span>Message body is not accessible via the Mimecast held mail API. To preview the full content, open the Mimecast Administration Console.
+            <a href="https://admin.services.mimecast.com" target="_blank" rel="noopener noreferrer" className="ml-1 underline hover:text-foreground">Open Mimecast Console →</a>
+          </span>
         </div>
 
         {/* Explanation */}
@@ -691,11 +706,11 @@ function MessageAnalysisDialog({ message, onClose, onRelease, releasing }: {
                   <Button
                     size="sm"
                     variant="outline"
-                    className="flex-shrink-0 gap-1 text-green-700 border-green-300 hover:bg-green-50 dark:hover:bg-green-950/20"
+                    className="flex-shrink-0 text-green-700 border-green-300 hover:bg-green-50 dark:hover:bg-green-950/20"
                     disabled={releasing}
                     onClick={() => { onRelease(message); onClose(); }}
                   >
-                    {releasing ? <Loader2 className="w-3 h-3 animate-spin" /> : <Check className="w-3 h-3" />}
+                    {releasing && <Loader2 className="w-3 h-3 animate-spin mr-1" />}
                     Release
                   </Button>
                 )}