deleted file mode 100644
--- a/mail/components/cloudfile/content/Hightail/fileExceedsLimit.js
+++ /dev/null
@@ -1,22 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-const Cc = Components.classes;
-const Ci = Components.interfaces;
-const Cu = Components.utils;
-const Cr = Components.results;
-
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-
-let fileExceedsLimit = {
-  onOK: function AAD_onOK() {
-    let href = "https://www.hightail.com/prosignup?p_code=pro&s=4001636&cid=pm-4001636";
-    gProtocolService.loadUrl(Services.io.newURI(href, "UTF-8", null));
-  },
-}
-
-XPCOMUtils.defineLazyServiceGetter(this, "gProtocolService",
-                                   "@mozilla.org/uriloader/external-protocol-service;1",
-                                   "nsIExternalProtocolService");

--- a/mail/components/cloudfile/content/Hightail/fileExceedsLimit.xul
+++ b/mail/components/cloudfile/content/Hightail/fileExceedsLimit.xul
@@ -10,30 +10,13 @@
    - License, v. 2.0. If a copy of the MPL was not distributed with this file,
    - You can obtain one at http://mozilla.org/MPL/2.0/.  -->
 <?xml-stylesheet href="chrome://global/skin/"?>
 <?xml-stylesheet href="chrome://messenger/skin/preferences/preferences.css" type="text/css"?>
 <?xml-stylesheet href="chrome://messenger/skin/cloudfile/Hightail/fileExceedsLimit.css" type="text/css"?>
 
 <dialog id="fileExceedsLimit"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
-        buttons="accept,cancel"
-        buttonlabelaccept="&fileExceedsLimit.accept;"
-        buttonlabelcancel="&fileExceedsLimit.cancel;"
-        ondialogaccept="return fileExceedsLimit.onOK();"
+        buttons="accept"
         title="&fileExceedsLimit.title;">
 
-  <script type="text/javascript;version=1.8"
-          src="chrome://messenger/content/cloudfile/Hightail/fileExceedsLimit.js"/>
-
-  <description id="title">&fileExceedsLimit.thatsBigFile;</description>
-  <description id="title2">&fileExceedsLimit.thatsBigFile2;</description>
-  <description id="proIncludes">&fileExceedsLimit.proIncludes;</description>
-  <description>
-    <image src="chrome://messenger/skin/cloudfile/Hightail/check.png"/><label>&fileExceedsLimit.pros1;</label>
-  </description>
-  <description>
-    <image src="chrome://messenger/skin/cloudfile/Hightail/check.png"/><label>&fileExceedsLimit.pros2;</label>
-  </description>
-  <description>
-    <image src="chrome://messenger/skin/cloudfile/Hightail/check.png"/><label>&fileExceedsLimit.pros3;</label>
-  </description>
+  <description>&fileExceedsLimit.thatsBigFile3;</description>
 </dialog>

--- a/mail/components/cloudfile/content/Hightail/fileExceedsQuota.js
+++ b/mail/components/cloudfile/content/Hightail/fileExceedsQuota.js
@@ -14,18 +14,8 @@ document.addEventListener("DOMContentLoa
   if ("wrappedJSObject" in window.arguments[0]) {
     let storage = parseInt(window.arguments[0].wrappedJSObject.storage);
     storage = (storage / 1024 / 1024 / 1024).toFixed(2);
     let currentStorage = document.getElementById('currentStorage');
     currentStorage.textContent = currentStorage.textContent.replace('#XXX', storage);
   }
 });
 
-let fileExceedsQuota = {
-  onOK: function AAD_onOK() {
-    let href = "https://www.hightail.com/prosignup?p_code=pro&s=4001637&cid=pm-4001637";
-    gProtocolService.loadUrl(Services.io.newURI(href, "UTF-8", null));
-  },
-}
-
-XPCOMUtils.defineLazyServiceGetter(this, "gProtocolService",
-                                   "@mozilla.org/uriloader/external-protocol-service;1",
-                                   "nsIExternalProtocolService");

--- a/mail/components/cloudfile/content/Hightail/fileExceedsQuota.xul
+++ b/mail/components/cloudfile/content/Hightail/fileExceedsQuota.xul
@@ -10,22 +10,17 @@
    - License, v. 2.0. If a copy of the MPL was not distributed with this file,
    - You can obtain one at http://mozilla.org/MPL/2.0/.  -->
 <?xml-stylesheet href="chrome://global/skin/"?>
 <?xml-stylesheet href="chrome://messenger/skin/preferences/preferences.css" type="text/css"?>
 <?xml-stylesheet href="chrome://messenger/skin/cloudfile/Hightail/fileExceedsLimit.css" type="text/css"?>
 
 <dialog id="fileExceedsQuota"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
-        buttons="accept,cancel"
-        buttonlabelaccept="&fileExceedsQuota.accept;"
-        buttonlabelcancel="&fileExceedsQuota.cancel;"
-        ondialogaccept="return fileExceedsQuota.onOK();"
+        buttons="accept"
         title="&fileExceedsQuota.title;">
 
   <script type="text/javascript;version=1.8"
           src="chrome://messenger/content/cloudfile/Hightail/fileExceedsQuota.js"/>
 
   <description id="title">&fileExceedsQuota.storageLimitReached;</description>
   <description id="currentStorage">&fileExceedsQuota.description;</description>
-  <description>&fileExceedsQuota.description2;</description>
-  <description>&fileExceedsQuota.description3;</description>
 </dialog>

--- a/mail/components/cloudfile/content/addAccountDialog.js
+++ b/mail/components/cloudfile/content/addAccountDialog.js
@@ -46,16 +46,20 @@ createAccountObserver.prototype = {
 
 let addAccountDialog = {
   _settings: null,
   _settingsWrap: null,
   _accountType: null,
   _accept: null,
   _strings: Services.strings
                     .createBundle("chrome://messenger/locale/cloudfile/addAccountDialog.properties"),
+  // This blacklist is for providers who no longer want to be offered
+  // as an option for a new Filelink provider, but still wants to
+  // exist as a Filelink provider for pre-existing users.
+  _blacklist: new Set(["YouSendIt"]),
 
   onInit: function AAD_onInit() {
     this._settings = document.getElementById("accountSettings");
     this._accountType = document.getElementById("accountType");
     this._noAccountText = document.getElementById("noAccountText");
     this._accept = document.documentElement.getButton("accept");
     this._cancel = document.documentElement.getButton("cancel");
     this._messages = document.getElementById("messages");
@@ -132,16 +136,19 @@ let addAccountDialog = {
 
   addAccountTypes: function AAD_addAccountTypes() {
     for (let [key, provider] in cloudFileAccounts.enumerateProviders()) {
       // If we already have an account for this type, don't add it to the list.
       // This limitation will hopefully be removed in the future.
       if (cloudFileAccounts.getAccountsForType(key).length > 0)
         continue;
 
+      if (this._blacklist.has(key))
+        continue;
+
       let menuitem = document.createElement("menuitem");
       menuitem.setAttribute("label", provider.displayName);
       menuitem.setAttribute("value", key);
 
       if (provider.iconClass) {
         menuitem.setAttribute("class", "menuitem-iconic menuitem-with-favicon");
         menuitem.setAttribute("image", provider.iconClass);
       }

--- a/mail/components/cloudfile/jar.mn
+++ b/mail/components/cloudfile/jar.mn
@@ -10,12 +10,11 @@ messenger.jar:
     content/messenger/cloudfile/Box/settings.xhtml (content/Box/settings.xhtml)
     content/messenger/cloudfile/Box/management.xhtml (content/Box/management.xhtml)
     content/messenger/cloudfile/Box/management.js (content/Box/management.js)
     content/messenger/cloudfile/Hightail/management.xhtml (content/Hightail/management.xhtml)
     content/messenger/cloudfile/Hightail/management.js (content/Hightail/management.js)
     content/messenger/cloudfile/Hightail/settings.js (content/Hightail/settings.js)
     content/messenger/cloudfile/Hightail/settings.xhtml (content/Hightail/settings.xhtml)
     content/messenger/cloudfile/Hightail/fileExceedsLimit.xul (content/Hightail/fileExceedsLimit.xul)
-    content/messenger/cloudfile/Hightail/fileExceedsLimit.js (content/Hightail/fileExceedsLimit.js)
     content/messenger/cloudfile/Hightail/fileExceedsQuota.xul (content/Hightail/fileExceedsQuota.xul)
     content/messenger/cloudfile/Hightail/fileExceedsQuota.js (content/Hightail/fileExceedsQuota.js)
     content/messenger/cloudfile/Hightail/fileExceeds2GB.xul (content/Hightail/fileExceeds2GB.xul)

--- a/mail/components/cloudfile/nsHightail.js
+++ b/mail/components/cloudfile/nsHightail.js
@@ -334,17 +334,17 @@ nsHightail.prototype = {
         this.log.info("request status = " + req.status +
                       " response = " + req.responseText);
         let docResponse = JSON.parse(req.responseText);
         this.log.info("user info response parsed = " + docResponse);
         if (docResponse.errorStatus)
           this.log.info("error status = " + docResponse.errorStatus.code);
 
         if (docResponse.errorStatus && docResponse.errorStatus.code > 200) {
-          if (docResponse.errorStatus.code > 400) {
+          if (docResponse.errorStatus.code >= 400) {
             // Our token has gone stale
             this.log.info("Our token has gone stale - requesting a new one.");
 
             let retryGetUserInfo = function() {
               this._getUserInfo(successCallback, failureCallback);
             }.bind(this);
 
             this._handleStaleToken(retryGetUserInfo, failureCallback);
@@ -361,16 +361,17 @@ nsHightail.prototype = {
           this._fileSpaceUsed = parseInt(storage.currentUsage);
           this._availableStorage = parseInt(storage.storageQuota) - this._fileSpaceUsed;
         }
         else
           this._availableStorage = parseInt(account.availableStorage);
 
         this._maxFileSize = docResponse.type == "BAS" ? 52428800 : (parseInt(account.maxFileSize));
         this.log.info("available storage = " + this._availableStorage + " max file size = " + this._maxFileSize);
+
         successCallback();
       }
       else
         failureCallback();
     }.bind(this);
 
     req.onerror = function() {
       this.log.info("getUserInfo failed - status = " + req.status);

--- a/mail/locales/en-US/chrome/messenger/cloudfile/Hightail/fileExceedsLimit.dtd
+++ b/mail/locales/en-US/chrome/messenger/cloudfile/Hightail/fileExceedsLimit.dtd
@@ -1,13 +1,6 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this file,
    - You can obtain one at http://mozilla.org/MPL/2.0/.  -->
 <!ENTITY fileExceedsLimit.title   "Hightail">
-<!ENTITY fileExceedsLimit.thatsBigFile   "Sending files larger than 50 MB">
-<!ENTITY fileExceedsLimit.thatsBigFile2   "is a premium feature.">
-<!ENTITY fileExceedsLimit.accept "Upgrade">
-<!ENTITY fileExceedsLimit.cancel "Cancel">
+<!ENTITY fileExceedsLimit.thatsBigFile3 "Sending files larger than 50 MB is not supported for non-premium accounts.">
 <!ENTITY fileExceedsLimit.style "width: 40em; min-height: 20em;">
-<!ENTITY fileExceedsLimit.proIncludes "Upgrade now to send this file plus:">
-<!ENTITY fileExceedsLimit.pros1 "Send files and folders up to 2GB">
-<!ENTITY fileExceedsLimit.pros2 "Store unlimited files online">
-<!ENTITY fileExceedsLimit.pros3 "Access and share files from anywhere">

--- a/mail/locales/en-US/chrome/messenger/cloudfile/Hightail/fileExceedsQuota.dtd
+++ b/mail/locales/en-US/chrome/messenger/cloudfile/Hightail/fileExceedsQuota.dtd
@@ -1,11 +1,7 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this file,
    - You can obtain one at http://mozilla.org/MPL/2.0/.  -->
 <!ENTITY fileExceedsQuota.title   "Hightail">
 <!ENTITY fileExceedsQuota.storageLimitReached   "Storage limit reached">
-<!ENTITY fileExceedsQuota.accept "Upgrade">
-<!ENTITY fileExceedsQuota.cancel "Cancel">
 <!ENTITY fileExceedsQuota.description "You have reached your account storage limit of 2GB.">
 <!ENTITY fileExceedsQuota.description1 "Your current storage usage is #XXX GB.">
-<!ENTITY fileExceedsQuota.description2 "Upgrade today to Pro Plus account and get more storage.">
-<!ENTITY fileExceedsQuota.description3 "You can also choose to delete files in your account to create more space.">

--- a/mail/themes/linux/mail/cloudfile/Hightail/fileExceedsLimit.css
+++ b/mail/themes/linux/mail/cloudfile/Hightail/fileExceedsLimit.css
@@ -9,28 +9,11 @@ html, body {
 
 #fileExceedsLimit {
   padding-left: 15px;
   padding-right: 13px;
   padding-top: 15px;
   padding-bottom: 15px;
 }
 
-#proIncludes {
+#title {
   font-weight: bold;
-  margin-bottom: 10px;
-}
-
-#title {
-  font-size: 20pt;
-  color: rgb(141,198,63);
 }
-
-#title2 {
-  font-size: 20pt;
-  color: rgb(141,198,63);
-  margin-top: -10px;
-  margin-bottom: 10px;
-}
-
-description {
-  font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
-}

--- a/mail/themes/osx/mail/cloudfile/Hightail/fileExceedsLimit.css
+++ b/mail/themes/osx/mail/cloudfile/Hightail/fileExceedsLimit.css
@@ -9,28 +9,11 @@ html, body {
 
 #fileExceedsLimit {
   padding-left: 15px;
   padding-right: 13px;
   padding-top: 15px;
   padding-bottom: 15px;
 }
 
-#proIncludes {
+#title {
   font-weight: bold;
-  margin-bottom: 10px;
-}
-
-#title {
-  font-size: 20pt;
-  color: rgb(141,198,63);
 }
-
-#title2 {
-  font-size: 20pt;
-  color: rgb(141,198,63);
-  margin-top: -10px;
-  margin-bottom: 10px;
-}
-
-description {
-  font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
-}

--- a/mail/themes/windows/mail/cloudfile/Hightail/fileExceedsLimit.css
+++ b/mail/themes/windows/mail/cloudfile/Hightail/fileExceedsLimit.css
@@ -9,28 +9,11 @@ html, body {
 
 #fileExceedsLimit {
   padding-left: 15px;
   padding-right: 13px;
   padding-top: 15px;
   padding-bottom: 15px;
 }
 
-#proIncludes {
+#title {
   font-weight: bold;
-  margin-bottom: 10px;
-}
-
-#title {
-  font-size: 20pt;
-  color: rgb(141,198,63);
 }
-
-#title2 {
-  font-size: 20pt;
-  color: rgb(141,198,63);
-  margin-top: -10px;
-  margin-bottom: 10px;
-}
-
-description {
-  font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
-}