diff --git a/src/app/pages/client/ClientNonUIFeatures.tsx b/src/app/pages/client/ClientNonUIFeatures.tsx
index ae7997ed5..f2b84ffed 100644
--- a/src/app/pages/client/ClientNonUIFeatures.tsx
+++ b/src/app/pages/client/ClientNonUIFeatures.tsx
@@ -783,15 +783,20 @@ function ReminderMonitor() {
   const { reminders, removeReminder } = useReminders();
   const setToast = useSetAtom(toastQueueAtom);
   const mDirects = useAtomValue(mDirectAtom);
+  const [showNotifications] = useSetting(settingsAtom, 'showNotifications');
+  const quietActive = useNotificationsQuiet();
   const firedRef = useRef<Set<string>>(new Set());
   const removingRef = useRef<Set<string>>(new Set());
-  // Read the latest reminders / DM map via refs so the poll interval below is
-  // created once — not torn down and restarted (which resets its 30s countdown
-  // and can indefinitely defer a near-due reminder) on every reminder sync (N115).
+  // Read the latest reminders / DM map / notification prefs via refs so the poll
+  // interval below is created once — not torn down and restarted (which resets
+  // its 30s countdown and can indefinitely defer a near-due reminder) on every
+  // reminder sync (N115).
   const remindersRef = useRef(reminders);
   remindersRef.current = reminders;
   const mDirectsRef = useRef(mDirects);
   mDirectsRef.current = mDirects;
+  const osNotifyRef = useRef(false);
+  osNotifyRef.current = showNotifications && !quietActive;
 
   useEffect(() => {
     const check = () => {
@@ -815,6 +820,23 @@ function ReminderMonitor() {
           const hashPath = mDirectsRef.current.has(r.roomId)
             ? getDirectRoomPath(r.roomId, r.eventId)
             : getHomeRoomPath(r.roomId, r.eventId);
+          // [Gitea #338] A reminder is only done once the user has SEEN it: the
+          // toast stays until clicked or dismissed (it used to vanish after 4 s
+          // and the reminder was deleted at once, so one due while the user was
+          // away was lost). The removal is persisted on that click/dismiss; an
+          // unseen reminder comes back on the next start.
+          const done = () => {
+            if (removingRef.current.has(key)) return;
+            removingRef.current.add(key);
+            removeReminder(r.eventId, r.timestamp).catch(() => {
+              removingRef.current.delete(key);
+            });
+          };
+          const open = () => {
+            done();
+            // window.location.hash setter auto-prepends '#' (as the toast does)
+            window.location.hash = hashPath;
+          };
           setToast({
             id: `reminder-${key}`,
             displayName: 'Reminder',
@@ -822,16 +844,30 @@ function ReminderMonitor() {
             roomName,
             roomId: r.roomId,
             hashPath,
+            sticky: true,
+            onClick: open,
+            onDismiss: done,
           });
-        }
-        // Persist the removal, retrying on a later tick if it fails — without
-        // re-showing the toast (N114). The server echo drops it from
-        // `reminders` once the write lands.
-        if (!removingRef.current.has(key)) {
-          removingRef.current.add(key);
-          removeReminder(r.eventId, r.timestamp).catch(() => {
-            removingRef.current.delete(key);
-          });
+          // Away from the window: also raise an OS notification (the reminder is
+          // an explicit request, but quiet hours / notifications-off win). Never
+          // put decrypted E2EE text in it (N106).
+          if (osNotifyRef.current && notificationPermission('granted') && !document.hasFocus()) {
+            const encrypted = !!room?.hasEncryptionStateEvent();
+            showOsNotification(
+              'Reminder',
+              {
+                icon: LogoSVG,
+                badge: LogoSVG,
+                body: encrypted ? `A message in ${roomName}` : body,
+                tag: `reminder-${key}`,
+                data: { path: hashPath, roomId: r.roomId },
+              },
+              () => {
+                window.focus();
+                open();
+              },
+            ).catch(() => undefined);
+          }
         }
       });
     };