diff --git a/views/jsconfig.handlebars b/views/jsconfig.handlebars
index c9ddf16d..3dbe827c 100644
--- a/views/jsconfig.handlebars
+++ b/views/jsconfig.handlebars
@@ -1,8 +1,15 @@
+{{!-- This file should be es5 only --}}
+var isIE = /trident\/7\.|msie/i.test(navigator.userAgent);
+var isUnsupportedPage = /\/unsupported/.test(location.pathname);
+if (isIE && !isUnsupportedPage) {
+  window.location.replace('/unsupported/ie');
+}
+
 {{#if dsn}}
 window.dsn = '{{{dsn}}}';
 {{/if}}
 {{#if trackerId}}
 window.trackerId = '{{{trackerId}}}';
 {{/if}}
-const MAXFILESIZE = {{{maxFileSize}}};
-const EXPIRE_SECONDS = {{{expireSeconds}}};
+var MAXFILESIZE = {{{maxFileSize}}};
+var EXPIRE_SECONDS = {{{expireSeconds}}};
diff --git a/views/unsupported.handlebars b/views/unsupported.handlebars
index 04a428b2..444060d5 100644
--- a/views/unsupported.handlebars
+++ b/views/unsupported.handlebars
@@ -1,19 +1,19 @@
 <div id="unsupported-browser">
-  <div class="title" data-l10n-id="notSupportedHeader"></div>
+  <div class="title" data-l10n-id="notSupportedHeader">Your browser is not supported.</div>
   {{#if outdated}}
-    <div class="description" data-l10n-id="notSupportedOutdatedDetail"></div>
+    <div class="description" data-l10n-id="notSupportedOutdatedDetail">Unfortunately this version of Firefox does not support the web technology that powers Firefox Send. You’ll need to update your browser.</div>
     <a id="update-firefox" href="https://support.mozilla.org/kb/update-firefox-latest-version">
       <img src="/resources/firefox_logo-only.svg" class="firefox-logo" alt="Firefox"/>
-      <div class="unsupported-button-text" data-l10n-id="updateFirefox"></div>
+      <div class="unsupported-button-text" data-l10n-id="updateFirefox">Update Firefox</div>
     </a>
   {{else}}
-    <div class="description" data-l10n-id="notSupportedDetail"></div>
+    <div class="description" data-l10n-id="notSupportedDetail">Unfortunately this browser does not support the web technology that powers Firefox Send. You’ll need to try another browser. We recommend Firefox!</div>
     <a id="dl-firefox" href="https://www.mozilla.org/firefox/new/?scene=2" target="_blank">
       <img src="/resources/firefox_logo-only.svg" class="firefox-logo" alt="Firefox"/>
       <div class="unsupported-button-text">Firefox<br>
-        <span data-l10n-id="downloadFirefoxButtonSub"></span>
+        <span data-l10n-id="downloadFirefoxButtonSub">Free Download</span>
       </div>
     </a>
   {{/if}}
-  <div class="unsupported-description" data-l10n-id="uploadPageExplainer"></div>
+  <div class="unsupported-description" data-l10n-id="uploadPageExplainer">Send files through a safe, private, and encrypted link that automatically expires to ensure your stuff does not remain online forever.</div>
 </div>