diff --git a/site/messaging/providers/postcard/pcm.py b/site/messaging/providers/postcard/pcm.py
index d4ce105..cb5c76c 100644
--- a/site/messaging/providers/postcard/pcm.py
+++ b/site/messaging/providers/postcard/pcm.py
@@ -309,7 +309,9 @@ def place_postcard_order(
         "returnAddress": return_address_from_settings(),
         "recipients": [recipient],
     }
-    data = pcm_request("POST", "/order", json_body=payload)
+    # Product-specific path — plain POST /order is 404 ("Cannot POST /order").
+    # Docs: Place Postcard Order → POST /order/postcard
+    data = pcm_request("POST", "/order/postcard", json_body=payload)
     if not isinstance(data, dict):
         raise PcmApiError("Unexpected order response from PCM")