diff --git a/examples/example.py b/examples/example.py
index 1d1ba32..4745514 100644
--- a/examples/example.py
+++ b/examples/example.py
@@ -23,7 +23,9 @@ client.new_message("example@example.org")
 # Set message headers
 client.headers(
     {
+        "from": "Example <example@example.com>",
         "subject": "Test",
+        "to": "Example <example@example.org>",
     }
 )
 # Write message content