diff --git a/docusaurus.config.js b/docusaurus.config.js
index 10cafcf59e..b9414645b2 100644
--- a/docusaurus.config.js
+++ b/docusaurus.config.js
@@ -110,6 +110,11 @@ const config = {
             label: "Help",
             position: "right",
           },
+          {
+            to: "mailto:docs@prophecy.io",
+            label: "Feedback",
+            position: "right",
+          },
           { to: "http://app.prophecy.io/", label: "Login", position: "right" },
         ],
       },
@@ -141,6 +146,10 @@ const config = {
           {
             title: "More",
             items: [
+              {
+                label: "Documentation feedback",
+                href: "mailto:docs@prophecy.io",
+              },
               {
                 label: "Login",
                 href: "https://app.prophecy.io/",
diff --git a/src/theme/NotFound.js b/src/theme/NotFound.js
new file mode 100644
index 0000000000..d0898bc9e3
--- /dev/null
+++ b/src/theme/NotFound.js
@@ -0,0 +1,25 @@
+import React from "react";
+import { PageMetadata } from "@docusaurus/theme-common";
+import Layout from "@theme/Layout";
+export default function NotFound() {
+  return (
+    <>
+      <PageMetadata title="Page Not Found" />
+      <Layout>
+        <main className="container margin-vert--xl">
+          <div className="row">
+            <div className="col col--6 col--offset-3">
+              <h1 className="hero__title">Page Not Found</h1>
+              <p>We could not find what you were looking for.</p>
+              <p>
+                Please contact Prophecy at{" "}
+                <a href="mailto:docs@prophecy.io">docs@prophecy.io</a> to let us
+                know our link is broken.
+              </p>
+            </div>
+          </div>
+        </main>
+      </Layout>
+    </>
+  );
+}