diff --git a/server/src/routes/webhook-sms.ts b/server/src/routes/webhook-sms.ts
index 2161cee..f961a72 100644
--- a/server/src/routes/webhook-sms.ts
+++ b/server/src/routes/webhook-sms.ts
@@ -85,9 +85,44 @@ export function createWebhookSmsRouter(deps: WebhookSmsRouterDeps): Router {
       return;
     }
 
-    const status = (req.body as Record<string, unknown>)?.status;
-    const messageUuid = (req.body as Record<string, unknown>)?.message_uuid;
-    logger.info({ event: 'sms.status_update', messageUuid, status }, 'Message status update');
+    const data = (req.body ?? {}) as Record<string, unknown>;
+    const status = data.status;
+    const messageUuid = data.message_uuid;
+
+    // Vonage Messages API status callbacks include fields like:
+    // message_uuid, to, from, channel, timestamp, status (plus optional fields like workflow).
+    // For rejected statuses, additional reason/code fields may also be present depending on channel/route.
+    const to = typeof data.to === 'string' ? data.to : undefined;
+    const from = typeof data.from === 'string' ? data.from : undefined;
+    const channel = typeof data.channel === 'string' ? data.channel : undefined;
+    const timestamp = typeof data.timestamp === 'string' ? data.timestamp : undefined;
+
+    const rejectionCode =
+      (typeof data.error_code === 'string' || typeof data.error_code === 'number' ? data.error_code : undefined) ??
+      (typeof data.err_code === 'string' || typeof data.err_code === 'number' ? data.err_code : undefined) ??
+      (typeof data.code === 'string' || typeof data.code === 'number' ? data.code : undefined);
+    const rejectionReason =
+      (typeof data.error_title === 'string' ? data.error_title : undefined) ??
+      (typeof data.error === 'string' ? data.error : undefined) ??
+      (typeof data.reason === 'string' ? data.reason : undefined) ??
+      (typeof data.detail === 'string' ? data.detail : undefined) ??
+      (typeof data.description === 'string' ? data.description : undefined);
+
+    logger.info(
+      {
+        event: 'sms.status_update',
+        messageUuid,
+        status,
+        channel,
+        timestamp,
+        to: to ? maskPhone(to) : undefined,
+        from: from ? maskPhone(from) : undefined,
+        rejectionCode,
+        rejectionReason,
+        payload: sanitizeVonageStatusPayload(data),
+      },
+      'Message status update'
+    );
 
     res.status(200).json({ status: 'received' });
   });
@@ -95,6 +130,19 @@ export function createWebhookSmsRouter(deps: WebhookSmsRouterDeps): Router {
   return router;
 }
 
+function sanitizeVonageStatusPayload(data: Record<string, unknown>): Record<string, unknown> {
+  // Avoid leaking full phone numbers or message contents into logs.
+  const out: Record<string, unknown> = { ...data };
+  if (typeof out.to === 'string') out.to = maskPhone(out.to);
+  if (typeof out.from === 'string') out.from = maskPhone(out.from);
+
+  // Best-effort removal of any accidental content fields if present.
+  for (const key of ['text', 'message', 'content', 'image', 'video', 'file', 'audio']) {
+    if (key in out) delete out[key];
+  }
+  return out;
+}
+
 async function handleInbound(body: unknown, deps: WebhookSmsRouterDeps) {
   const parsed = parseVonageInboundMessage(body);
   if (!parsed) {