diff --git a/calexium_lib/mail/send_mail.anubis b/calexium_lib/mail/send_mail.anubis
index 619e1b3..112e404 100644
--- a/calexium_lib/mail/send_mail.anubis
+++ b/calexium_lib/mail/send_mail.anubis
@@ -361,8 +361,8 @@ public define SendContentResult
     timeout then
       if read_bytes(source, 65536) is
       {
-        failure         then copy_error(so_far),
-        time_out        then copy_error(so_far), 
+        failure         then logError(send_mail_log, "send_content: failed to read input data_io"); copy_error(so_far),
+        time_out        then logError(send_mail_log, "send_content: timeout reading input data_io"); copy_error(so_far), 
         success(buffer) then 
           if sm_flush( buffer, weaken(target) ) is
           {
@@ -412,22 +412,27 @@ define Reply_Result
     RWStream      conn,
     List(Data_IO)  mail_part
   ) =
-  //open the message file from the drive
+  with start_time = now,
   if sm_copy_Data_IO_List_to_Stream(mail_part, conn, 0) is
   {
     smtp_reply(reply)   then reply
     copy_error(written) then 
+      with finish_time = now,
       logError(send_mail_log, "send_content: error sending data");
+      logTrace(send_mail_log, send_mail_mask, "send_content: "+written+" bytes sent in "+finish_time - start_time+" second(s)"); 
       if written > 1024000 then 
         logInfo(send_mail_log, "send_content: may be due to over sized mail. Convert it to 452 error.");
         reply(452, ["Error sending big email (more than 1 Mb)"])
       else
         error,
-    copy_ok(_)          then
+    copy_ok(size)          then
       if reliable_write(tcp(conn), [crlf_dot_crlf]) is
       {
         failure     then logError(send_mail_log, "send_content: error writing CRLF.CRLF"); error,
-        success(_)  then receive_reply(conn)
+        success(_)  then 
+          with finish_time = (Int)now,
+          logTrace(send_mail_log, send_mail_mask, "mail sent "+size+" bytes in "+finish_time - start_time+" second(s)"); 
+          receive_reply(conn)
       }
   }.
 
--
libgit2 0.21.4