diff --git a/ui/src/actions/UserAction.ts b/ui/src/actions/UserAction.ts
deleted file mode 100644
index eb0e7d6..0000000
--- a/ui/src/actions/UserAction.ts
+++ /dev/null
@@ -1,146 +0,0 @@
-import axios, {AxiosResponse} from 'axios';
-import {detect} from 'detect-browser';
-import * as config from '../config';
-import ClientStore from '../stores/ClientStore';
-import dispatcher from '../stores/dispatcher';
-import {getToken, setAuthorizationToken} from './defaultAxios';
-import * as GlobalAction from './GlobalAction';
-
-/**
- * Login the user.
- * @param {string} username
- * @param {string} password
- */
-export function login(username: string, password: string) {
-    const browser = detect();
-    const name = (browser && browser.name + ' ' + browser.version) || 'unknown browser';
-    authenticating();
-    axios
-        .create()
-        .request({
-            url: config.get('url') + 'client',
-            method: 'POST',
-            data: {name},
-            auth: {username, password},
-        })
-        .then((resp) => {
-            GlobalAction.snack(`A client named '${name}' was created for your session.`);
-            setAuthorizationToken(resp.data.token);
-            tryAuthenticate()
-                .then(GlobalAction.initialLoad)
-                .catch(() =>
-                    console.log(
-                        'create client succeeded, but authenticated with given token failed'
-                    )
-                );
-        })
-        .catch(() => {
-            GlobalAction.snack('Login failed');
-            noAuthentication();
-        });
-}
-
-/** Log the user out. */
-export function logout() {
-    const token = getToken();
-    if (token !== null) {
-        axios.delete(config.get('url') + 'client/' + ClientStore.getIdByToken(token)).then(() => {
-            setAuthorizationToken(null);
-            noAuthentication();
-        });
-    }
-}
-
-export function tryAuthenticate() {
-    return axios
-        .create()
-        .get(config.get('url') + 'current/user', {headers: {'X-Gotify-Key': getToken()}})
-        .then((resp) => {
-            dispatcher.dispatch({type: 'AUTHENTICATED', payload: resp.data});
-            return resp;
-        })
-        .catch((resp) => {
-            if (getToken()) {
-                setAuthorizationToken(null);
-                GlobalAction.snack(
-                    'Authentication failed, try to re-login. (client or user was deleted)'
-                );
-            }
-            noAuthentication();
-            return Promise.reject(resp);
-        });
-}
-
-export function checkIfAlreadyLoggedIn() {
-    const token = getToken();
-    if (token) {
-        setAuthorizationToken(token);
-        tryAuthenticate().then(GlobalAction.initialLoad);
-    } else {
-        noAuthentication();
-    }
-}
-
-function noAuthentication() {
-    dispatcher.dispatch({type: 'NO_AUTHENTICATION'});
-}
-
-function authenticating() {
-    dispatcher.dispatch({type: 'AUTHENTICATING'});
-}
-
-/**
- * Changes the current user.
- * @param {string} pass
- */
-export function changeCurrentUser(pass: string) {
-    axios
-        .post(config.get('url') + 'current/user/password', {pass})
-        .then(() => GlobalAction.snack('Password changed'));
-}
-
-/** Fetches all users. */
-export function fetchUsers() {
-    axios.get(config.get('url') + 'user').then((resp: AxiosResponse<IUser[]>) => {
-        dispatcher.dispatch({type: 'UPDATE_USERS', payload: resp.data});
-    });
-}
-
-/**
- * Delete a user.
- * @param {int} id the user id
- */
-export function deleteUser(id: number) {
-    axios
-        .delete(config.get('url') + 'user/' + id)
-        .then(fetchUsers)
-        .then(() => GlobalAction.snack('User deleted'));
-}
-
-/**
- * Create a user.
- * @param {string} name
- * @param {string} pass
- * @param {bool} admin if true, the user is an administrator
- */
-export function createUser(name: string, pass: string, admin: boolean) {
-    axios
-        .post(config.get('url') + 'user', {name, pass, admin})
-        .then(fetchUsers)
-        .then(() => GlobalAction.snack('User created'));
-}
-
-/**
- * Update a user by id.
- * @param {int} id
- * @param {string} name
- * @param {string} pass empty if no change
- * @param {bool} admin if true, the user is an administrator
- */
-export function updateUser(id: number, name: string, pass: string | null, admin: boolean) {
-    axios.post(config.get('url') + 'user/' + id, {name, pass, admin}).then(() => {
-        fetchUsers();
-        tryAuthenticate(); // try authenticate updates the current user
-        GlobalAction.snack('User updated');
-    });
-}
diff --git a/ui/src/actions/defaultAxios.ts b/ui/src/actions/defaultAxios.ts
index f480192..6e74259 100644
--- a/ui/src/actions/defaultAxios.ts
+++ b/ui/src/actions/defaultAxios.ts
@@ -1,45 +1,27 @@
 import axios from 'axios';
-import {snack} from './GlobalAction';
-import {tryAuthenticate} from './UserAction';
+import {currentUser} from '../stores/CurrentUser';
+import SnackManager from '../stores/SnackManager';
 
-const tokenKey = 'gotify-login-key';
-
-/**
- * Set the authorization token for the next requests.
- * @param {string|null} token the gotify application token
- */
-export function setAuthorizationToken(token: string | null) {
-    if (token) {
-        localStorage.setItem(tokenKey, token);
-        axios.defaults.headers.common['X-Gotify-Key'] = token;
-    } else {
-        localStorage.removeItem(tokenKey);
-        delete axios.defaults.headers.common['X-Gotify-Key'];
-    }
-}
+axios.interceptors.request.use((config) => {
+    config.headers['X-Gotify-Key'] = currentUser.token();
+    return config;
+});
 
 axios.interceptors.response.use(undefined, (error) => {
     if (!error.response) {
-        snack('Gotify server is not reachable, try refreshing the page.');
+        SnackManager.snack('Gotify server is not reachable, try refreshing the page.');
         return Promise.reject(error);
     }
 
     const status = error.response.status;
 
     if (status === 401) {
-        tryAuthenticate().then(() => snack('Could not complete request.'));
+        currentUser.tryAuthenticate().then(() => SnackManager.snack('Could not complete request.'));
     }
 
     if (status === 400) {
-        snack(error.response.data.error + ': ' + error.response.data.errorDescription);
+        SnackManager.snack(error.response.data.error + ': ' + error.response.data.errorDescription);
     }
 
     return Promise.reject(error);
 });
-
-/**
- * @return {string} the application token
- */
-export function getToken(): string | null {
-    return localStorage.getItem(tokenKey);
-}
diff --git a/ui/src/component/Header.tsx b/ui/src/component/Header.tsx
index 3d8b8d3..6dd1fcf 100644
--- a/ui/src/component/Header.tsx
+++ b/ui/src/component/Header.tsx
@@ -12,7 +12,8 @@ import Highlight from '@material-ui/icons/Highlight';
 import SupervisorAccount from '@material-ui/icons/SupervisorAccount';
 import React, {Component} from 'react';
 import {Link} from 'react-router-dom';
-import * as UserAction from '../actions/UserAction';
+import {currentUser} from '../stores/CurrentUser';
+import {observer} from 'mobx-react';
 
 const styles = (theme: Theme) => ({
     appBar: {
@@ -43,6 +44,7 @@ interface IProps {
     showSettings: VoidFunction;
 }
 
+@observer
 class Header extends Component<IProps & Styles> {
     public render() {
         const {classes, version, name, loggedIn, admin, toggleTheme} = this.props;
@@ -107,7 +109,7 @@ class Header extends Component<IProps & Styles> {
                     &nbsp;
                     {name}
                 </Button>
-                <Button color="inherit" onClick={UserAction.logout} id="logout">
+                <Button color="inherit" onClick={currentUser.logout} id="logout">
                     <ExitToApp />
                     &nbsp;Logout
                 </Button>
diff --git a/ui/src/component/SettingsDialog.tsx b/ui/src/component/SettingsDialog.tsx
index 05683db..c206d65 100644
--- a/ui/src/component/SettingsDialog.tsx
+++ b/ui/src/component/SettingsDialog.tsx
@@ -5,25 +5,25 @@ import DialogContent from '@material-ui/core/DialogContent';
 import DialogTitle from '@material-ui/core/DialogTitle';
 import TextField from '@material-ui/core/TextField';
 import Tooltip from '@material-ui/core/Tooltip';
-import React, {ChangeEvent, Component} from 'react';
-import * as UserAction from '../actions/UserAction';
-
-interface IState {
-    pass: string;
-}
+import React, {Component} from 'react';
+import {currentUser} from '../stores/CurrentUser';
+import {observable} from 'mobx';
+import {observer} from 'mobx-react';
 
 interface IProps {
     fClose: VoidFunction;
 }
 
-export default class SettingsDialog extends Component<IProps, IState> {
-    public state = {pass: ''};
+@observer
+export default class SettingsDialog extends Component<IProps> {
+    @observable
+    private pass = '';
 
     public render() {
-        const {pass} = this.state;
+        const {pass} = this;
         const {fClose} = this.props;
         const submitAndClose = () => {
-            UserAction.changeCurrentUser(pass);
+            currentUser.changePassword(pass);
             fClose();
         };
         return (
@@ -41,7 +41,7 @@ export default class SettingsDialog extends Component<IProps, IState> {
                         type="password"
                         label="New Pass *"
                         value={pass}
-                        onChange={this.handleChange.bind(this, 'pass')}
+                        onChange={(e) => (this.pass = e.target.value)}
                         fullWidth
                     />
                 </DialogContent>
@@ -63,10 +63,4 @@ export default class SettingsDialog extends Component<IProps, IState> {
             </Dialog>
         );
     }
-
-    private handleChange(propertyName: string, event: ChangeEvent<HTMLInputElement>) {
-        const state = this.state;
-        state[propertyName] = event.target.value;
-        this.setState(state);
-    }
 }
diff --git a/ui/src/pages/Login.tsx b/ui/src/pages/Login.tsx
index 3fbdf16..b3a0d34 100644
--- a/ui/src/pages/Login.tsx
+++ b/ui/src/pages/Login.tsx
@@ -1,21 +1,22 @@
 import Button from '@material-ui/core/Button';
 import Grid from '@material-ui/core/Grid';
 import TextField from '@material-ui/core/TextField';
-import React, {ChangeEvent, Component, FormEvent} from 'react';
-import * as UserAction from '../actions/UserAction';
+import React, {Component, FormEvent} from 'react';
 import Container from '../component/Container';
 import DefaultPage from '../component/DefaultPage';
+import {currentUser} from '../stores/CurrentUser';
+import {observable} from 'mobx';
+import {observer} from 'mobx-react';
 
-interface IState {
-    username: string;
-    password: string;
-}
-
-class Login extends Component<{}, IState> {
-    public state = {username: '', password: ''};
+@observer
+class Login extends Component {
+    @observable
+    private username = '';
+    @observable
+    private password = '';
 
     public render() {
-        const {username, password} = this.state;
+        const {username, password} = this;
         return (
             <DefaultPage title="Login" maxWidth={250} hideButton={true}>
                 <Grid item xs={12} style={{textAlign: 'center'}}>
@@ -27,7 +28,7 @@ class Login extends Component<{}, IState> {
                                 label="Username"
                                 margin="dense"
                                 value={username}
-                                onChange={this.handleChange.bind(this, 'username')}
+                                onChange={(e) => (this.username = e.target.value)}
                             />
                             <TextField
                                 type="password"
@@ -35,7 +36,7 @@ class Login extends Component<{}, IState> {
                                 label="Password"
                                 margin="normal"
                                 value={password}
-                                onChange={this.handleChange.bind(this, 'password')}
+                                onChange={(e) => (this.password = e.target.value)}
                             />
                             <Button
                                 type="submit"
@@ -54,15 +55,9 @@ class Login extends Component<{}, IState> {
         );
     }
 
-    private handleChange(propertyName: string, event: ChangeEvent<HTMLInputElement>) {
-        const state = this.state;
-        state[propertyName] = event.target.value;
-        this.setState(state);
-    }
-
     private login = (e: React.MouseEvent<HTMLInputElement>) => {
         e.preventDefault();
-        UserAction.login(this.state.username, this.state.password);
+        currentUser.login(this.username, this.password);
     };
 
     private preventDefault = (e: FormEvent<HTMLFormElement>) => e.preventDefault();
diff --git a/ui/src/stores/CurrentUser.ts b/ui/src/stores/CurrentUser.ts
new file mode 100644
index 0000000..05e378f
--- /dev/null
+++ b/ui/src/stores/CurrentUser.ts
@@ -0,0 +1,106 @@
+import axios, {AxiosResponse} from 'axios';
+import * as config from '../config';
+import {detect} from 'detect-browser';
+import * as GlobalAction from '../actions/GlobalAction';
+import SnackManager, {SnackReporter} from './SnackManager';
+import {observable} from 'mobx';
+
+const tokenKey = 'gotify-login-key';
+
+class CurrentUser {
+    private tokenCache: string | null = null;
+    @observable
+    public loggedIn = false;
+    @observable
+    public authenticating = false;
+    @observable
+    public user: IUser = {name: 'unknown', admin: false, id: -1};
+
+    public constructor(private readonly snack: SnackReporter) {}
+
+    public token = (): string => {
+        if (this.tokenCache !== null) {
+            return this.tokenCache;
+        }
+
+        const localStorageToken = window.localStorage.getItem(tokenKey);
+        if (localStorageToken) {
+            this.tokenCache = localStorageToken;
+            return localStorageToken;
+        }
+
+        return '';
+    };
+
+    private setToken = (token: string) => {
+        this.tokenCache = token;
+        window.localStorage.setItem(tokenKey, token);
+    };
+
+    public login = async (username: string, password: string) => {
+        this.authenticating = true;
+        const browser = detect();
+        const name = (browser && browser.name + ' ' + browser.version) || 'unknown browser';
+        axios
+            .create()
+            .request({
+                url: config.get('url') + 'client',
+                method: 'POST',
+                data: {name},
+                auth: {username, password},
+            })
+            .then((resp: AxiosResponse<IClient>) => {
+                this.snack(`A client named '${name}' was created for your session.`);
+                this.setToken(resp.data.token);
+                this.tryAuthenticate()
+                    .then((user) => {
+                        this.authenticating = false;
+                        this.loggedIn = true;
+                        GlobalAction.initialLoad(user);
+                    })
+                    .catch(() => {
+                        this.authenticating = false;
+                        console.log(
+                            'create client succeeded, but authenticated with given token failed'
+                        );
+                    });
+            })
+            .catch(() => {
+                this.authenticating = false;
+                return this.snack('Login failed');
+            });
+    };
+
+    public tryAuthenticate = async (): Promise<AxiosResponse<IUser>> => {
+        if (this.token() === '') {
+            return Promise.reject();
+        }
+
+        return axios
+            .create()
+            .get(config.get('url') + 'current/user', {headers: {'X-Gotify-Key': this.token()}})
+            .then((passThrough) => {
+                this.user = passThrough.data;
+                this.loggedIn = true;
+                return passThrough;
+            })
+            .catch((error) => {
+                this.logout();
+                return Promise.reject(error);
+            });
+    };
+
+    public logout = () => {
+        window.localStorage.removeItem(tokenKey);
+        this.tokenCache = null;
+        this.loggedIn = false;
+    };
+
+    public changePassword = (pass: string) => {
+        axios
+            .post(config.get('url') + 'current/user/password', {pass})
+            .then(() => this.snack('Password changed'));
+    };
+}
+
+export const currentUser = new CurrentUser(SnackManager.snack);
diff --git a/ui/src/stores/GlobalStore.ts b/ui/src/stores/GlobalStore.ts
deleted file mode 100644
index ae1f9fe..0000000
--- a/ui/src/stores/GlobalStore.ts
+++ /dev/null
@@ -1,48 +0,0 @@
-import {EventEmitter} from 'events';
-import dispatcher, {IEvent} from './dispatcher';
-
-class GlobalStore extends EventEmitter {
-    private currentUser: IUser | null = null;
-    private isAuthenticating = true;
-
-    public authenticating(): boolean {
-        return this.isAuthenticating;
-    }
-
-    public get(): IUser {
-        return this.currentUser || {name: 'unknown', admin: false, id: -1};
-    }
-
-    public isAdmin(): boolean {
-        return this.get().admin;
-    }
-
-    public getName(): string {
-        return this.get().name;
-    }
-
-    public isLoggedIn(): boolean {
-        return this.currentUser != null;
-    }
-
-    public handle(data: IEvent): void {
-        if (data.type === 'NO_AUTHENTICATION') {
-            this.set(null);
-        } else if (data.type === 'AUTHENTICATED') {
-            this.set(data.payload);
-        } else if (data.type === 'AUTHENTICATING') {
-            this.isAuthenticating = true;
-            this.emit('change');
-        }
-    }
-
-    private set(user: IUser | null): void {
-        this.isAuthenticating = false;
-        this.currentUser = user;
-        this.emit('change');
-    }
-}
-
-const store = new GlobalStore();
-dispatcher.register(store.handle.bind(store));
-export default store;