diff --git a/server/mailsender/mailsender.py b/server/mailsender/mailsender.py
index 936ba3c..190d108 100644
--- a/server/mailsender/mailsender.py
+++ b/server/mailsender/mailsender.py
@@ -11,8 +11,11 @@ import json
 
 CONFIG_DIR = '../config' if f7.isOnlineEnv() else '/var/data/conf_test/mailsender/config'
 
-def fetchEvent(refresh_time):
-    pass
+def fetchEventTimerFunc(refresh_time):
+    def done_callback():
+        f7.timer.callLater(refresh_time,
+                           lambda : fetchEventTimerFunc(refresh_time))
+    f7.app.createAsyncTask(done_callback, incrementUpdateRank, ())
 
 def getConf():
     cluster_conf = json.loads(open(CONFIG_DIR + '/mailsender.cluster.json', 'r').read())
@@ -34,7 +37,7 @@ if __name__ == "__main__":
 #    f7.app.registerHandler('Login', 'auth', __loginAuth)
     conf['refresh_time'] = 10
     f7.timer.callLater(conf['refresh_time'],
-                       lambda : fetchEvent(conf['refresh_time']))
+                       lambda : fetchEventTimerFunc(conf['refresh_time']))
 
     f7.app.listen(conf['listen_port'])
     f7.app.start()