diff --git a/UI/WebServerResources/MailerUI.js b/UI/WebServerResources/MailerUI.js
index ff08ee3bc..6face0a55 100644
--- a/UI/WebServerResources/MailerUI.js
+++ b/UI/WebServerResources/MailerUI.js
@@ -1567,8 +1567,12 @@ function getFoldersStateCallback(http) {
 function saveFoldersState() {
   if (mailAccounts.length > 0) {
     var foldersState = mailboxTree.getFoldersState();
-    var urlstr =  ApplicationBaseURL + "saveFoldersState" + "?expandedFolders=" + foldersState;
-    triggerAjaxRequest(urlstr, saveFoldersStateCallback);
+    var urlstr =  ApplicationBaseURL + "saveFoldersState";
+		var parameters = "expandedFolders=" + foldersState;
+    triggerAjaxRequest(urlstr, saveFoldersStateCallback, null, parameters,
+											 { "Content-type": "application/x-www-form-urlencoded",
+												 "Content-length": parameters.length,
+												 "Connection": "close" });
   }
 }