diff --git a/app/javascript/flavours/glitch/actions/markers.js b/app/javascript/flavours/glitch/actions/markers.js
new file mode 100644
index 000000000..c3a5fe86f
--- /dev/null
+++ b/app/javascript/flavours/glitch/actions/markers.js
@@ -0,0 +1,30 @@
+export const submitMarkers = () => (dispatch, getState) => {
+  const accessToken = getState().getIn(['meta', 'access_token'], '');
+  const params      = {};
+
+  const lastHomeId         = getState().getIn(['timelines', 'home', 'items', 0]);
+  const lastNotificationId = getState().getIn(['notifications', 'items', 0, 'id']);
+
+  if (lastHomeId) {
+    params.home = {
+      last_read_id: lastHomeId,
+    };
+  }
+
+  if (lastNotificationId) {
+    params.notifications = {
+      last_read_id: lastNotificationId,
+    };
+  }
+
+  if (Object.keys(params).length === 0) {
+    return;
+  }
+
+  const client = new XMLHttpRequest();
+
+  client.open('POST', '/api/v1/markers', false);
+  client.setRequestHeader('Content-Type', 'application/json');
+  client.setRequestHeader('Authorization', `Bearer ${accessToken}`);
+  client.send(JSON.stringify(params));
+};
diff --git a/app/javascript/flavours/glitch/features/ui/index.js b/app/javascript/flavours/glitch/features/ui/index.js
index 1feda0b97..7d9aeb02a 100644
--- a/app/javascript/flavours/glitch/features/ui/index.js
+++ b/app/javascript/flavours/glitch/features/ui/index.js
@@ -12,6 +12,7 @@ import { expandHomeTimeline } from 'flavours/glitch/actions/timelines';
 import { expandNotifications, notificationsSetVisibility } from 'flavours/glitch/actions/notifications';
 import { fetchFilters } from 'flavours/glitch/actions/filters';
 import { clearHeight } from 'flavours/glitch/actions/height_cache';
+import { submitMarkers } from 'flavours/glitch/actions/markers';
 import { WrappedSwitch, WrappedRoute } from 'flavours/glitch/util/react_router_helpers';
 import UploadArea from './components/upload_area';
 import ColumnsAreaContainer from './containers/columns_area_container';
@@ -243,7 +244,9 @@ class UI extends React.Component {
   };
 
   handleBeforeUnload = (e) => {
-    const { intl, hasComposingText, hasMediaAttachments } = this.props;
+    const { intl, dispatch, hasComposingText, hasMediaAttachments } = this.props;
+
+    dispatch(submitMarkers());
 
     if (hasComposingText || hasMediaAttachments) {
       // Setting returnValue to any string causes confirmation dialog.