diff --git a/lib/smstools-handler/failed.js b/lib/smstools-handler/failed.js
index da580f6..5f10597 100644
--- a/lib/smstools-handler/failed.js
+++ b/lib/smstools-handler/failed.js
@@ -106,5 +106,6 @@ ${text}
         newFileName,
         to,
         text,
+        textLength: text.length,
     });
 };
diff --git a/lib/transport.js b/lib/transport.js
index 2e6ef83..9897f31 100644
--- a/lib/transport.js
+++ b/lib/transport.js
@@ -31,7 +31,7 @@ ${msg.trim()}
             return;
         }
 
-        logger.info('Writing outbox', { to: destination, msg: msg.trim(), filename });
+        logger.info('Writing outbox', { to: destination, msg: msg.trim(), msgLength: msg.trim().length, filename });
         try {
             fs.promises.writeFile(filename, msgFileContent, { mode: 0o660 });
         } catch (e) {