diff --git a/README.md b/README.md
index 3210d9a..0adb84b 100755
--- a/README.md
+++ b/README.md
@@ -60,3 +60,9 @@ you can import/export with json file.
 you can cutomize shortcut and other settings fron icon-menu.
 
 - whether or not confirm before delete
+
+### Sync
+
+To sync your notes in the cloud (and share them across several browsers automatically) you will need to register and login from the menu.
+
+This setup can be customized from icon-menu: icon-menu where you can specify a custom url. The url must point to a running backend instance. You can learn how to self host one using the [dedicated project](https://github.com/kumabook/stickynotes-backend/).
\ No newline at end of file
diff --git a/src/background.js b/src/background.js
index 1f8e7da..9333c31 100644
--- a/src/background.js
+++ b/src/background.js
@@ -234,7 +234,7 @@ function handlePopupMessage(msg) {
       break;
     }
     case 'reset-password':
-      browser.tabs.create({ url: api.resetPasswordUrl });
+      browser.tabs.create({ url: api.getResetPasswordUrl() });
       break;
     default:
       break;
@@ -348,6 +348,10 @@ function handleOptionsUIMessage(msg) {
         })));
       break;
     }
+    case 'updated-server-url': {
+      browser.storage.local.get().then(payload => api.setOnPremiseUrl(payload));
+      break;
+    }
     default:
       break;
   }
diff --git a/src/containers/OptionsUI.jsx b/src/containers/OptionsUI.jsx
index caeb34b..f7e7ba7 100644
--- a/src/containers/OptionsUI.jsx
+++ b/src/containers/OptionsUI.jsx
@@ -1,4 +1,5 @@
 /* global confirm: false */
+/* global chrome */
 import React from 'react';
 import PropTypes from 'prop-types';
 import { connect } from 'react-redux';
@@ -21,6 +22,43 @@ class OptionsUI extends React.Component {
     );
   }
 
+  renderSetOnPremise() {
+    return (
+      <div>
+        <h4 className="optionsLabel">On Premise</h4>
+        <input
+          className="optionsValueInput"
+          type="checkbox"
+          checked={this.props.hasCustomBaseUrl}
+          onChange={e => {
+            this.props.hasCustomBaseUrl = e.target.checked;
+            this.props.handleUseCustomerBackupServer(this.props);
+          }}
+        />
+        Use a custom backend server
+        {this.props.hasCustomBaseUrl && ['BASE_URL', 'CLIENT_ID', 'CLIENT_SECRET'].map((key)=> <div key={key}>
+          <input
+            className="optionsValueTextInput"
+            type="text"
+            name={key}
+            value={this.props[key]}
+            onChange={e => {
+              this.props[key] = e.target.value;
+              this.props.handleUseCustomerBackupServer(this.props);
+            }}
+          />
+          &nbsp;{key}
+        </div>)}
+        {this.props.hasCustomBaseUrl && this.props.BASE_URL && this.props.BASE_URL != "" && (
+          <div>
+            <div className="optionsDescription">You can get a client id and a client secret <a href={`${this.props.BASE_URL}/oauth/applications`}>here</a></div>
+            <input class="optionsDescription" type="button" value="Authorize" onClick={()=>{chrome.permissions.request({origins: [this.props['BASE_URL']]})}} /> Allow the web-extension to backup data on this domain
+          </div>
+        )}
+      </div>
+    );
+  }
+
   renderFiles() {
     return (
       <div>
@@ -43,6 +81,7 @@ class OptionsUI extends React.Component {
       <div>
         {this.renderFiles()}
         {this.renderCanMoveFocusByTab()}
+        {this.renderSetOnPremise()}
       </div>
     );
   }
@@ -54,6 +93,11 @@ OptionsUI.propTypes = {
   handleInputFiles:              PropTypes.func.isRequired,
   handleCanMoveFocusByTabChange: PropTypes.func.isRequired,
   canMoveFocusByTab:             PropTypes.bool.isRequired,
+  handleUseCustomerBackupServer: PropTypes.func.isRequired,
+  hasCustomBaseUrl:              PropTypes.func.isRequired,
+  BASE_URL:                      PropTypes.string,
+  CLIENT_ID:                     PropTypes.string,
+  CLIENT_SECRET:                 PropTypes.string,
 };
 
 OptionsUI.defaultProps = {
@@ -62,6 +106,10 @@ OptionsUI.defaultProps = {
 function mapStateToProps(state) {
   return {
     canMoveFocusByTab: state.canMoveFocusByTab,
+    hasCustomBaseUrl:  state.hasCustomBaseUrl,
+    BASE_URL:          state.BASE_URL,
+    CLIENT_ID:         state.CLIENT_ID,
+    CLIENT_SECRET:     state.CLIENT_SECRET,
   };
 }
 
@@ -90,6 +138,10 @@ function mapDispatchToProps(dispatch) {
       type: 'UPDATE_CAN_MOVE_FOCUS_BY_TAB',
       payload,
     }),
+    handleUseCustomerBackupServer: payload => dispatch({
+      type: 'UPDATE_USE_CUSTOM_BACKUP_SERVER',
+      payload,
+    }),
   };
 }
 
diff --git a/src/reducers/options_ui.js b/src/reducers/options_ui.js
index a5c9e77..137c448 100644
--- a/src/reducers/options_ui.js
+++ b/src/reducers/options_ui.js
@@ -9,9 +9,49 @@ const canMoveFocusByTab = (state = true, action) => {
   }
 };
 
+const hasCustomBaseUrl = (state = false, action) => {
+  switch (action.type) {
+    case 'UPDATE_USE_CUSTOM_BACKUP_SERVER':
+      return action.payload.hasCustomBaseUrl;
+    default:
+      return state;
+  }
+};
+
+const BASE_URL = (state = "", action) => {
+  switch (action.type) {
+    case 'UPDATE_USE_CUSTOM_BACKUP_SERVER':
+      return action.payload.BASE_URL;
+    default:
+      return state;
+  }
+};
+
+const CLIENT_ID = (state = "", action) => {
+  switch (action.type) {
+    case 'UPDATE_USE_CUSTOM_BACKUP_SERVER':
+      return action.payload.CLIENT_ID;
+    default:
+      return state;
+  }
+};
+
+const CLIENT_SECRET = (state = "", action) => {
+  switch (action.type) {
+    case 'UPDATE_USE_CUSTOM_BACKUP_SERVER':
+      return action.payload.CLIENT_SECRET;
+    default:
+      return state;
+  }
+};
+
 
 const rootReducer = combineReducers({
   canMoveFocusByTab,
+  hasCustomBaseUrl,
+  BASE_URL,
+  CLIENT_ID,
+  CLIENT_SECRET,
 });
 
 export default rootReducer;
diff --git a/src/sagas/options_ui.js b/src/sagas/options_ui.js
index a0d4656..c8d8e3d 100644
--- a/src/sagas/options_ui.js
+++ b/src/sagas/options_ui.js
@@ -94,6 +94,14 @@ function* watchCanMoveFocusByTab() {
   });
 }
 
+function* watchUseCustomerBackupServer() {
+  yield takeEvery('UPDATE_USE_CUSTOM_BACKUP_SERVER', function* update() {
+    const { BASE_URL, CLIENT_ID, CLIENT_SECRET, hasCustomBaseUrl } = yield select(state => state);
+    yield browser.storage.local.set({ BASE_URL, CLIENT_ID, CLIENT_SECRET, hasCustomBaseUrl });
+    port.postMessage({ type: 'updated-server-url', portName });
+  });
+}
+
 
 export default function* root() {
   yield [
@@ -101,5 +109,6 @@ export default function* root() {
     fork(watchImport),
     fork(watchExport),
     fork(watchCanMoveFocusByTab),
+    fork(watchUseCustomerBackupServer),
   ];
 }
diff --git a/src/utils/api.js b/src/utils/api.js
index 5408155..8d890a6 100644
--- a/src/utils/api.js
+++ b/src/utils/api.js
@@ -2,7 +2,40 @@
 import browser from 'webextension-polyfill';
 import logger  from './logger';
 
-const { BASE_URL, CLIENT_ID, CLIENT_SECRET } = process.env;
+let { BASE_URL, CLIENT_ID, CLIENT_SECRET } = process.env;
+
+browser.storage.local.get('hasCustomBaseUrl').then((hasCustomBaseUrl) => {
+  if (hasCustomBaseUrl) {
+    ['BASE_URL', 'CLIENT_ID', 'CLIENT_SECRET'].forEach(key=>browser.storage.local.get(key).then((v) => {
+      if (v && v[key]) {
+        if (key=='BASE_URL')
+          BASE_URL = v[key];
+        if (key=='CLIENT_ID')
+          CLIENT_ID = v[key];
+        if (key=='CLIENT_SECRET')
+          CLIENT_SECRET = v[key];
+      }
+    }));
+  }
+});
+
+
+function setOnPremiseUrl(payload) {
+  let server = {};
+  ['BASE_URL', 'CLIENT_ID', 'CLIENT_SECRET'].forEach(key=>{
+    if (!payload.hasCustomBaseUrl || typeof(payload[key]) == "undefined" || payload[key] == "") {
+      server[key] = process.env[key];
+    } else {
+      server[key] = payload[key];
+    }
+  });
+  ({ BASE_URL, CLIENT_ID, CLIENT_SECRET } = server);
+}
+
+
+function getResetPasswordUrl() {
+  return `${BASE_URL}/password_resets/new`; 
+}
 
 function getAccessToken() {
   return browser.storage.local.get('accessToken').then((v) => {
@@ -84,6 +117,9 @@ function sendRequest(method, url, params) {
     logger.trace(JSON.stringify(params));
 
     return fetch(u, { method, headers, body })
+      .catch(function(e) {
+        return {ok: false, status: e.code, exception: e}
+      })
       .then((response) => {
         logger.trace(response);
         if (response.ok) {
@@ -158,6 +194,6 @@ export default {
   isLoggedIn,
   getUser,
   setUser,
-  signUpUrl:        `${BASE_URL}/users/new`,
-  resetPasswordUrl: `${BASE_URL}/password_resets/new`,
+  getResetPasswordUrl,
+  setOnPremiseUrl,
 };