diff --git a/src/mod/applications/mod_commands/mod_commands.c b/src/mod/applications/mod_commands/mod_commands.c
index 7b6de973a7..769207910f 100644
--- a/src/mod/applications/mod_commands/mod_commands.c
+++ b/src/mod/applications/mod_commands/mod_commands.c
@@ -72,6 +72,7 @@ SWITCH_STANDARD_API(user_data_function)
 
 	switch_event_create(&params, SWITCH_EVENT_REQUEST_PARAMS);
 	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "user", user);
+	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "mailbox", user);
 	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "domain", domain);
 	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "type", type);
 	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "key", key);