find and update email disk usage, ref: https://github.com/usmannasir/cyberpanel/issues/872

plogical/virtualHostUtilities.py

@@ -1195,6 +1195,14 @@ class virtualHostUtilities:
             except:
                 return [int(0), int(0)]
 
+    @staticmethod
+    def getDiskUsageofPath(path):
+
+        try:
+             return subprocess.check_output('du -hs %s --block-size=1M' % (path), shell=True).decode("utf-8").split()[0]
+        except BaseException:
+            return '0MB'
+
     @staticmethod
     def permissionControl(path):
         try: