diff --git a/locale/defaultMessages.json b/locale/defaultMessages.json
index 2d255cd00..988d08276 100644
--- a/locale/defaultMessages.json
+++ b/locale/defaultMessages.json
@@ -1675,6 +1675,10 @@
     "context": "button",
     "string": "Delete"
   },
+  "src_dot_demo": {
+    "context": "notification message after log in",
+    "string": "Just to let you know... You're in demo mode. You can play around with the dashboard but can't save changes."
+  },
   "src_dot_description": {
     "string": "Description"
   },
diff --git a/package-lock.json b/package-lock.json
index dcdde831a..421499f39 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17951,6 +17951,11 @@
         "react-clientside-effect": "^1.2.0"
       }
     },
+    "react-gtm-module": {
+      "version": "2.0.8",
+      "resolved": "https://registry.npmjs.org/react-gtm-module/-/react-gtm-module-2.0.8.tgz",
+      "integrity": "sha512-OU5FwAHC3gWnnxJ+MLwBMLZO1Pmn1DiVCGHqptwDnNojE3QRrNxjqozkW5cNS4Zp+C6HZ8a4ZIt0QPNlpzua4Q=="
+    },
     "react-helmet": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/react-helmet/-/react-helmet-5.2.1.tgz",
diff --git a/package.json b/package.json
index 784d95fd5..780ac8970 100644
--- a/package.json
+++ b/package.json
@@ -52,6 +52,7 @@
     "react-dom": "^16.9.0",
     "react-dropzone": "^8.2.0",
     "react-error-boundary": "^1.2.5",
+    "react-gtm-module": "^2.0.8",
     "react-helmet": "^5.2.1",
     "react-infinite-scroller": "^1.2.4",
     "react-inlinesvg": "^0.8.4",
diff --git a/src/auth/AuthProvider.tsx b/src/auth/AuthProvider.tsx
index 060da3ab4..e5e470b0d 100644
--- a/src/auth/AuthProvider.tsx
+++ b/src/auth/AuthProvider.tsx
@@ -1,3 +1,5 @@
+import { DEMO_MODE } from "@saleor/config";
+import useNotifier from "@saleor/hooks/useNotifier";
 import { maybe } from "@saleor/misc";
 import {
   isSupported as isCredentialsManagementAPISupported,
@@ -6,6 +8,7 @@ import {
 } from "@saleor/utils/credentialsManagement";
 import React from "react";
 import { MutationFunction, MutationResult } from "react-apollo";
+import { useIntl } from "react-intl";
 
 import { UserContext } from "./";
 import {
@@ -17,7 +20,12 @@ import { RefreshToken, RefreshTokenVariables } from "./types/RefreshToken";
 import { TokenAuth, TokenAuthVariables } from "./types/TokenAuth";
 import { User } from "./types/User";
 import { VerifyToken, VerifyTokenVariables } from "./types/VerifyToken";
-import { getAuthToken, removeAuthToken, setAuthToken } from "./utils";
+import {
+  displayDemoMessage,
+  getAuthToken,
+  removeAuthToken,
+  setAuthToken
+} from "./utils";
 
 interface AuthProviderOperationsProps {
   children: (props: {
@@ -30,27 +38,39 @@ interface AuthProviderOperationsProps {
 }
 const AuthProviderOperations: React.FC<AuthProviderOperationsProps> = ({
   children
-}) => (
-  <TypedTokenAuthMutation>
-    {(...tokenAuth) => (
-      <TypedVerifyTokenMutation>
-        {(...tokenVerify) => (
-          <TokenRefreshMutation>
-            {(...tokenRefresh) => (
-              <AuthProvider
-                tokenAuth={tokenAuth}
-                tokenVerify={tokenVerify}
-                tokenRefresh={tokenRefresh}
-              >
-                {children}
-              </AuthProvider>
-            )}
-          </TokenRefreshMutation>
-        )}
-      </TypedVerifyTokenMutation>
-    )}
-  </TypedTokenAuthMutation>
-);
+}) => {
+  const intl = useIntl();
+  const notify = useNotifier();
+
+  const handleLogin = () => {
+    if (DEMO_MODE) {
+      displayDemoMessage(intl, notify);
+    }
+  };
+
+  return (
+    <TypedTokenAuthMutation>
+      {(...tokenAuth) => (
+        <TypedVerifyTokenMutation>
+          {(...tokenVerify) => (
+            <TokenRefreshMutation>
+              {(...tokenRefresh) => (
+                <AuthProvider
+                  tokenAuth={tokenAuth}
+                  tokenVerify={tokenVerify}
+                  tokenRefresh={tokenRefresh}
+                  onLogin={handleLogin}
+                >
+                  {children}
+                </AuthProvider>
+              )}
+            </TokenRefreshMutation>
+          )}
+        </TypedVerifyTokenMutation>
+      )}
+    </TypedTokenAuthMutation>
+  );
+};
 
 interface AuthProviderProps {
   children: (props: {
@@ -72,6 +92,7 @@ interface AuthProviderProps {
     MutationFunction<RefreshToken, RefreshTokenVariables>,
     MutationResult<RefreshToken>
   ];
+  onLogin?: () => void;
 }
 
 interface AuthProviderState {
@@ -130,11 +151,14 @@ class AuthProvider extends React.Component<
   }
 
   login = async (email: string, password: string) => {
-    const { tokenAuth } = this.props;
+    const { tokenAuth, onLogin } = this.props;
     const [tokenAuthFn] = tokenAuth;
 
     tokenAuthFn({ variables: { email, password } }).then(result => {
       if (result && !result.data.tokenCreate.errors.length) {
+        if (!!onLogin) {
+          onLogin();
+        }
         saveCredentials(result.data.tokenCreate.user, password);
       }
     });
diff --git a/src/auth/components/LoginPage/LoginPage.tsx b/src/auth/components/LoginPage/LoginPage.tsx
index 4ef242773..60f1d9d19 100644
--- a/src/auth/components/LoginPage/LoginPage.tsx
+++ b/src/auth/components/LoginPage/LoginPage.tsx
@@ -4,6 +4,7 @@ import TextField from "@material-ui/core/TextField";
 import Typography from "@material-ui/core/Typography";
 import Form from "@saleor/components/Form";
 import { FormSpacer } from "@saleor/components/FormSpacer";
+import { DEMO_MODE } from "@saleor/config";
 import { commonMessages } from "@saleor/intl";
 import React from "react";
 import { FormattedMessage, useIntl } from "react-intl";
@@ -53,8 +54,16 @@ const LoginCard: React.FC<LoginCardProps> = props => {
   const classes = useStyles(props);
   const intl = useIntl();
 
+  let initialFormData = { email: "", password: "" };
+  if (DEMO_MODE) {
+    initialFormData = {
+      email: "admin@example.com",
+      password: "admin"
+    };
+  }
+
   return (
-    <Form initial={{ email: "", password: "" }} onSubmit={onSubmit}>
+    <Form initial={initialFormData} onSubmit={onSubmit}>
       {({ change: handleChange, data, submit: handleSubmit }) => (
         <>
           {error && (
diff --git a/src/auth/utils.ts b/src/auth/utils.ts
index f2ed57e85..72ebf3a45 100644
--- a/src/auth/utils.ts
+++ b/src/auth/utils.ts
@@ -1,3 +1,7 @@
+import { UseNotifierResult } from "@saleor/hooks/useNotifier";
+import { commonMessages } from "@saleor/intl";
+import { IntlShape } from "react-intl";
+
 const TOKEN_STORAGE_KEY = "dashboardAuth";
 
 export const getAuthToken = () =>
@@ -13,3 +17,12 @@ export const removeAuthToken = () => {
   localStorage.removeItem(TOKEN_STORAGE_KEY);
   sessionStorage.removeItem(TOKEN_STORAGE_KEY);
 };
+
+export const displayDemoMessage = (
+  intl: IntlShape,
+  notify: UseNotifierResult
+) => {
+  notify({
+    text: intl.formatMessage(commonMessages.demo)
+  });
+};
diff --git a/src/config.ts b/src/config.ts
index 90b81e7c8..6dee3beb2 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -2,7 +2,7 @@ import packageInfo from "../package.json";
 import { SearchVariables } from "./hooks/makeSearch";
 import { ListSettings, ListViews, Pagination } from "./types";
 
-export const APP_MOUNT_URI = process.env.APP_MOUNT_URI || "/";
+export const APP_MOUNT_URI = process.env.APP_MOUNT_URI;
 export const API_URI = process.env.API_URI;
 
 export const DEFAULT_INITIAL_SEARCH_DATA: SearchVariables = {
@@ -90,3 +90,5 @@ export const defaultListSettings: AppListViewSettings = {
 };
 
 export const APP_VERSION = packageInfo.version;
+export const DEMO_MODE = process.env.DEMO_MODE === "true";
+export const GTM_ID = process.env.GTM_ID;
diff --git a/src/index.tsx b/src/index.tsx
index d38f2e5ad..45625ac19 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -11,6 +11,7 @@ import React from "react";
 import { ApolloProvider } from "react-apollo";
 import { render } from "react-dom";
 import ErrorBoundary from "react-error-boundary";
+import TagManager from "react-gtm-module";
 import { useIntl } from "react-intl";
 import { BrowserRouter, Route, Switch } from "react-router-dom";
 
@@ -31,7 +32,7 @@ import { MessageManager } from "./components/messages";
 import { ShopProvider } from "./components/Shop";
 import ThemeProvider from "./components/Theme";
 import { WindowTitle } from "./components/WindowTitle";
-import { API_URI, APP_MOUNT_URI } from "./config";
+import { API_URI, APP_MOUNT_URI, GTM_ID } from "./config";
 import ConfigurationSection, { createConfigurationMenu } from "./configuration";
 import AppStateProvider from "./containers/AppState";
 import { CustomerSection } from "./customers";
@@ -66,6 +67,10 @@ interface ResponseError extends ErrorResponse {
   };
 }
 
+if (process.env.GTM_ID !== undefined) {
+  TagManager.initialize({ gtmId: GTM_ID });
+}
+
 const invalidTokenLink = onError((error: ResponseError) => {
   if (
     (error.networkError && error.networkError.statusCode === 401) ||
diff --git a/src/intl.ts b/src/intl.ts
index 479b630dc..43c150b65 100644
--- a/src/intl.ts
+++ b/src/intl.ts
@@ -10,6 +10,11 @@ export const commonMessages = defineMessages({
   dashboard: {
     defaultMessage: "Dashboard"
   },
+  demo: {
+    defaultMessage:
+      "Just to let you know... You're in demo mode. You can play around with the dashboard but can't save changes.",
+    description: "notification message after log in"
+  },
   description: {
     defaultMessage: "Description"
   },
diff --git a/webpack.config.js b/webpack.config.js
index ad8a00efb..db1920d20 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -22,10 +22,12 @@ const htmlWebpackPlugin = new HtmlWebpackPlugin({
   hash: true,
   template: "./src/index.html"
 });
-const environmentPlugin = new webpack.EnvironmentPlugin([
-  "APP_MOUNT_URI",
-  "API_URI"
-]);
+const environmentPlugin = new webpack.EnvironmentPlugin({
+  API_URI: "",
+  APP_MOUNT_URI: "/",
+  DEMO_MODE: false,
+  GTM_ID: ""
+});
 
 const dashboardBuildPath = "build/dashboard/";
 
@@ -35,8 +37,8 @@ module.exports = (env, argv) => {
   let fileLoaderPath;
   let output;
 
-  if(!process.env.API_URI) {
-    throw new Error("Environment variable API_URI not set")
+  if (!process.env.API_URI) {
+    throw new Error("Environment variable API_URI not set");
   }
 
   if (!devMode) {