diff --git a/.env.example b/.env.example
index f68bd43..cdbaac3 100644
--- a/.env.example
+++ b/.env.example
@@ -57,6 +57,13 @@ BOOKING_BACK_SEAT_ENABLED=true
 BOOKING_WHOLE_VEHICLE_ENABLED=true
 BOOKING_FRONT_SEAT_MAX_PER_BOOKING=1
 
+BOOKING_ADMIN_EMAILS="example@gmail.com"
+
+SMS_ENABLED=false
+SMS_SERVER=
+SMS_TOKEN=
+SMS_SENDER=
+
 KBZ_APP_ID=
 KBZ_MERCHANT_CODE=
 KBZ_MERCHANT_KEY=
diff --git a/app-modules/booking/src/Actions/AssignDriverAction.php b/app-modules/booking/src/Actions/AssignDriverAction.php
index ba331de..bbd9168 100644
--- a/app-modules/booking/src/Actions/AssignDriverAction.php
+++ b/app-modules/booking/src/Actions/AssignDriverAction.php
@@ -4,6 +4,7 @@ namespace Modules\Booking\Actions;
 
 use Modules\Booking\Data\AssignDriverData;
 use Modules\Booking\Enums\BookingStatus;
+use Modules\Booking\Events\DriverAssigned;
 use Modules\Booking\Exceptions\DriverAssignmentNotAllowedException;
 use Modules\Booking\Models\Booking;
 
@@ -21,6 +22,12 @@ class AssignDriverAction
             throw DriverAssignmentNotAllowedException::notConfirmed($booking);
         }
 
+        if ($booking->travel_date->lt(today())) {
+            throw DriverAssignmentNotAllowedException::travelDateInPast($booking);
+        }
+
+        $isFirstAssignment = $booking->driver_name === null;
+
         $booking->update([
             'driver_name' => $data->driverName,
             'driver_phone' => $data->driverPhone,
@@ -28,6 +35,13 @@ class AssignDriverAction
             'car_model' => $data->carModel,
         ]);
 
+        // Guards against a double-submit of the same form resulting in two
+        // identical SMS notifications to the passenger — a genuine
+        // reassignment always changes at least one of these columns.
+        if ($booking->wasChanged(['driver_name', 'driver_phone', 'car_plate_number', 'car_model'])) {
+            DriverAssigned::dispatch($booking, $isFirstAssignment);
+        }
+
         return $booking;
     }
 }
diff --git a/app-modules/booking/src/Events/DriverAssigned.php b/app-modules/booking/src/Events/DriverAssigned.php
new file mode 100644
index 0000000..b23f81f
--- /dev/null
+++ b/app-modules/booking/src/Events/DriverAssigned.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace Modules\Booking\Events;
+
+use Illuminate\Foundation\Events\Dispatchable;
+use Modules\Booking\Models\Booking;
+
+/**
+ * Fired whenever AssignDriverAction sets or updates a booking's
+ * driver/vehicle details — covers both the first assignment and any later
+ * reassignment, since both go through the same action. $isFirstAssignment
+ * lets listeners (e.g. the SMS notification) word the message differently
+ * for "driver assigned" vs "driver info updated".
+ */
+class DriverAssigned
+{
+    use Dispatchable;
+
+    public function __construct(public Booking $booking, public bool $isFirstAssignment) {}
+}
diff --git a/app-modules/booking/src/Exceptions/DriverAssignmentNotAllowedException.php b/app-modules/booking/src/Exceptions/DriverAssignmentNotAllowedException.php
index 0d0adba..37e143a 100644
--- a/app-modules/booking/src/Exceptions/DriverAssignmentNotAllowedException.php
+++ b/app-modules/booking/src/Exceptions/DriverAssignmentNotAllowedException.php
@@ -16,6 +16,13 @@ class DriverAssignmentNotAllowedException extends RuntimeException
         );
     }
 
+    public static function travelDateInPast(Booking $booking): self
+    {
+        return new self(
+            "Booking [{$booking->booking_ref}] cannot have a driver assigned because its travel date [{$booking->travel_date->toDateString()}] is in the past."
+        );
+    }
+
     public function render(Request $request): ?JsonResponse
     {
         if ($request->expectsJson()) {
diff --git a/app-modules/booking/src/Filament/Resources/Bookings/Actions/AssignDriverTableAction.php b/app-modules/booking/src/Filament/Resources/Bookings/Actions/AssignDriverTableAction.php
index ef345a6..1c68f86 100644
--- a/app-modules/booking/src/Filament/Resources/Bookings/Actions/AssignDriverTableAction.php
+++ b/app-modules/booking/src/Filament/Resources/Bookings/Actions/AssignDriverTableAction.php
@@ -25,6 +25,7 @@ class AssignDriverTableAction
             ->icon(Heroicon::OutlinedTruck)
             ->color('primary')
             ->visible(fn (Booking $record): bool => $record->status === BookingStatus::Confirmed
+                && $record->travel_date->gte(today())
                 && (auth()->user()?->can('manage_bookings') ?? false))
             ->schema([
                 TextInput::make('driver_name')->required(),
diff --git a/app-modules/booking/src/Listeners/SendDriverAssignedSms.php b/app-modules/booking/src/Listeners/SendDriverAssignedSms.php
new file mode 100644
index 0000000..27eb609
--- /dev/null
+++ b/app-modules/booking/src/Listeners/SendDriverAssignedSms.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace Modules\Booking\Listeners;
+
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Modules\Booking\Events\DriverAssigned;
+use Modules\Shared\Sms\SmsService;
+
+/**
+ * Notifies the passenger of their driver/car details whenever a driver is
+ * assigned or reassigned (domain.md — driver/vehicle assignment). Queued
+ * since it's an outbound HTTP call to the SMS gateway.
+ */
+class SendDriverAssignedSms implements ShouldQueue
+{
+    public function __construct(private readonly SmsService $smsService) {}
+
+    public function handle(DriverAssigned $event): void
+    {
+        $booking = $event->booking;
+
+        $this->smsService->send($booking->passenger_phone, $this->message($event));
+    }
+
+    private function message(DriverAssigned $event): string
+    {
+        $booking = $event->booking;
+
+        $vehicle = trim($booking->car_model !== null
+            ? "{$booking->car_plate_number} ({$booking->car_model})"
+            : $booking->car_plate_number);
+        $route = $booking->route->fromDestination->name.' - '.$booking->route->toDestination->name;
+        $mmRoute = $booking->route->fromDestination->mm_name.' - '.$booking->route->toDestination->mm_name;
+
+        $appName = 'BNF Express - '.config('app.name');
+        $supportPhone = config('app.support_phone');
+        $supportEmail = config('app.support_email');
+        $contact = "Help: {$supportPhone} / {$supportEmail}\nအကူအညီလိုအပ်ပါက ဆက်သွယ်ရန်: {$supportPhone} / {$supportEmail}";
+
+        if ($event->isFirstAssignment) {
+            $en = "Your driver has been assigned for booking {$booking->booking_ref} ({$route}). Driver: {$booking->driver_name}, {$booking->driver_phone}. Vehicle: {$vehicle}.";
+            $mm = "ဘွတ်ကင် {$booking->booking_ref} ({$mmRoute}) အတွက် ယာဉ်မောင်း သတ်မှတ်ပြီးပါပြီ။ ယာဉ်မောင်း - {$booking->driver_name}, {$booking->driver_phone}။ ယာဉ် - {$vehicle}။";
+        } else {
+            $en = "Driver info updated for booking {$booking->booking_ref} ({$route}). Driver: {$booking->driver_name}, {$booking->driver_phone}. Vehicle: {$vehicle}.";
+            $mm = "ဘွတ်ကင် {$booking->booking_ref} ({$mmRoute}) ၏ ယာဉ်မောင်းအချက်အလက်ကို ပြင်ဆင်ထားပါသည်။ ယာဉ်မောင်း - {$booking->driver_name}, {$booking->driver_phone}။ ယာဉ် - {$vehicle}။";
+        }
+
+        return "{$appName}\n{$en}\n{$mm}\n{$contact}";
+    }
+}
diff --git a/app-modules/booking/src/Providers/BookingServiceProvider.php b/app-modules/booking/src/Providers/BookingServiceProvider.php
index bc96f84..b05bceb 100644
--- a/app-modules/booking/src/Providers/BookingServiceProvider.php
+++ b/app-modules/booking/src/Providers/BookingServiceProvider.php
@@ -3,7 +3,10 @@
 namespace Modules\Booking\Providers;
 
 use Illuminate\Contracts\Auth\Access\Gate;
+use Illuminate\Support\Facades\Event;
 use Illuminate\Support\ServiceProvider;
+use Modules\Booking\Events\DriverAssigned;
+use Modules\Booking\Listeners\SendDriverAssignedSms;
 use Modules\Booking\Policies\BookingPolicy;
 
 class BookingServiceProvider extends ServiceProvider
@@ -13,5 +16,7 @@ class BookingServiceProvider extends ServiceProvider
     public function boot(Gate $gate): void
     {
         $gate->policy('Modules\Booking\Models\Booking', BookingPolicy::class);
+
+        // Event::listen(DriverAssigned::class, SendDriverAssignedSms::class);
     }
 }
diff --git a/app-modules/booking/tests/Feature/BookingResourceTest.php b/app-modules/booking/tests/Feature/BookingResourceTest.php
index b8b08f4..23281fa 100644
--- a/app-modules/booking/tests/Feature/BookingResourceTest.php
+++ b/app-modules/booking/tests/Feature/BookingResourceTest.php
@@ -149,6 +149,15 @@ test('the assign driver action is visible for a confirmed booking and hidden oth
         ->assertTableActionHidden('assignDriver', $pending);
 });
 
+test('the assign driver action is hidden once the travel date has passed', function () {
+    $past = Booking::factory()->create(['status' => BookingStatus::Confirmed, 'travel_date' => today()->subDay()]);
+    $today = Booking::factory()->create(['status' => BookingStatus::Confirmed, 'travel_date' => today()]);
+
+    Livewire::test(ListBookings::class)
+        ->assertTableActionHidden('assignDriver', $past)
+        ->assertTableActionVisible('assignDriver', $today);
+});
+
 test('the assign driver action is hidden from a user without manage_bookings', function () {
     $viewer = User::factory()->create()->givePermissionTo('view_bookings');
     $this->actingAs($viewer);
diff --git a/app-modules/booking/tests/Feature/SendDriverAssignedSmsTest.php b/app-modules/booking/tests/Feature/SendDriverAssignedSmsTest.php
new file mode 100644
index 0000000..67d0ff6
--- /dev/null
+++ b/app-modules/booking/tests/Feature/SendDriverAssignedSmsTest.php
@@ -0,0 +1,75 @@
+<?php
+
+use Modules\Booking\Enums\BookingStatus;
+use Modules\Booking\Events\DriverAssigned;
+use Modules\Booking\Listeners\SendDriverAssignedSms;
+use Modules\Booking\Models\Booking;
+use Modules\Catalog\Models\Destination;
+use Modules\Routing\Models\EvRoute;
+use Modules\Shared\Sms\SmsService;
+
+beforeEach(function () {
+    config([
+        'app.name' => 'FamousLY4 EV',
+        'app.support_phone' => '+959123456789',
+        'app.support_email' => 'support@famousLY4.test',
+    ]);
+});
+
+test('a first driver assignment texts the passenger with an "assigned" message including the route', function () {
+    $booking = Booking::factory()->create([
+        'status' => BookingStatus::Confirmed,
+        'passenger_phone' => '+959999888777',
+        'driver_name' => 'U Aung',
+        'driver_phone' => '+959111222333',
+        'car_plate_number' => 'YGN-1234',
+        'car_model' => 'Tesla Model Y',
+        'ev_route_id' => EvRoute::factory()->create([
+            'from_destination_id' => Destination::factory()->create(['name' => 'Yangon'])->id,
+            'to_destination_id' => Destination::factory()->create(['name' => 'Mandalay'])->id,
+        ])->id,
+    ]);
+
+    $sms = Mockery::mock(SmsService::class);
+    $sms->shouldReceive('send')
+        ->once()
+        ->with('+959999888777', Mockery::on(fn (string $message) => str_contains($message, 'assigned')
+            && str_contains($message, 'U Aung')
+            && str_contains($message, 'YGN-1234')
+            && str_contains($message, 'Yangon - Mandalay')
+            && str_contains($message, config('app.name'))
+            && str_contains($message, config('app.support_phone'))
+            && str_contains($message, config('app.support_email'))
+            && str_contains($message, 'ယာဉ်မောင်း')
+            && str_contains($message, 'အကူအညီလိုအပ်ပါက ဆက်သွယ်ရန်')));
+
+    (new SendDriverAssignedSms($sms))->handle(new DriverAssigned($booking, isFirstAssignment: true));
+});
+
+test('a driver reassignment texts the passenger with an "updated" message including the route', function () {
+    $booking = Booking::factory()->create([
+        'status' => BookingStatus::Confirmed,
+        'passenger_phone' => '+959999888777',
+        'driver_name' => 'Daw Hla',
+        'driver_phone' => '+959444555666',
+        'car_plate_number' => 'YGN-5678',
+        'ev_route_id' => EvRoute::factory()->create([
+            'from_destination_id' => Destination::factory()->create(['name' => 'Yangon'])->id,
+            'to_destination_id' => Destination::factory()->create(['name' => 'Mandalay'])->id,
+        ])->id,
+    ]);
+
+    $sms = Mockery::mock(SmsService::class);
+    $sms->shouldReceive('send')
+        ->once()
+        ->with('+959999888777', Mockery::on(fn (string $message) => str_contains($message, 'updated')
+            && str_contains($message, 'Daw Hla')
+            && str_contains($message, 'Yangon - Mandalay')
+            && str_contains($message, config('app.name'))
+            && str_contains($message, config('app.support_phone'))
+            && str_contains($message, config('app.support_email'))
+            && str_contains($message, 'ယာဉ်မောင်း')
+            && str_contains($message, 'အကူအညီလိုအပ်ပါက ဆက်သွယ်ရန်')));
+
+    (new SendDriverAssignedSms($sms))->handle(new DriverAssigned($booking, isFirstAssignment: false));
+});
diff --git a/app-modules/booking/tests/Unit/AssignDriverActionTest.php b/app-modules/booking/tests/Unit/AssignDriverActionTest.php
index 7289f4c..ebe06db 100644
--- a/app-modules/booking/tests/Unit/AssignDriverActionTest.php
+++ b/app-modules/booking/tests/Unit/AssignDriverActionTest.php
@@ -1,8 +1,10 @@
 <?php
 
+use Illuminate\Support\Facades\Event;
 use Modules\Booking\Actions\AssignDriverAction;
 use Modules\Booking\Data\AssignDriverData;
 use Modules\Booking\Enums\BookingStatus;
+use Modules\Booking\Events\DriverAssigned;
 use Modules\Booking\Exceptions\DriverAssignmentNotAllowedException;
 use Modules\Booking\Models\Booking;
 
@@ -23,6 +25,57 @@ test('it assigns driver and car details to a confirmed booking', function () {
         ->and($booking->refresh()->driver_name)->toBe('U Aung');
 });
 
+test('it dispatches DriverAssigned with isFirstAssignment true for a booking with no prior driver', function () {
+    Event::fake([DriverAssigned::class]);
+    $booking = Booking::factory()->create(['status' => BookingStatus::Confirmed]);
+
+    (new AssignDriverAction)->handle($booking, new AssignDriverData(
+        driverName: 'U Aung',
+        driverPhone: '+959111222333',
+        carPlateNumber: 'YGN-1234',
+    ));
+
+    Event::assertDispatched(DriverAssigned::class, fn (DriverAssigned $event) => $event->booking->is($booking) && $event->isFirstAssignment === true);
+});
+
+test('it dispatches DriverAssigned with isFirstAssignment false when reassigning', function () {
+    Event::fake([DriverAssigned::class]);
+    $booking = Booking::factory()->create([
+        'status' => BookingStatus::Confirmed,
+        'driver_name' => 'U Aung',
+        'driver_phone' => '+959111222333',
+        'car_plate_number' => 'YGN-1234',
+    ]);
+
+    (new AssignDriverAction)->handle($booking, new AssignDriverData(
+        driverName: 'Daw Hla',
+        driverPhone: '+959444555666',
+        carPlateNumber: 'YGN-5678',
+    ));
+
+    Event::assertDispatched(DriverAssigned::class, fn (DriverAssigned $event) => $event->isFirstAssignment === false);
+});
+
+test('it does not dispatch DriverAssigned again when resubmitted with identical driver/car details', function () {
+    Event::fake([DriverAssigned::class]);
+    $booking = Booking::factory()->create([
+        'status' => BookingStatus::Confirmed,
+        'driver_name' => 'U Aung',
+        'driver_phone' => '+959111222333',
+        'car_plate_number' => 'YGN-1234',
+        'car_model' => 'Tesla Model Y',
+    ]);
+
+    (new AssignDriverAction)->handle($booking, new AssignDriverData(
+        driverName: 'U Aung',
+        driverPhone: '+959111222333',
+        carPlateNumber: 'YGN-1234',
+        carModel: 'Tesla Model Y',
+    ));
+
+    Event::assertNotDispatched(DriverAssigned::class);
+});
+
 test('car_model is optional', function () {
     $booking = Booking::factory()->create(['status' => BookingStatus::Confirmed]);
 
@@ -47,6 +100,36 @@ test('it guards against assigning a driver to a pending_payment booking', functi
     expect($booking->refresh()->driver_name)->toBeNull();
 });
 
+test('it guards against assigning a driver when the travel date has already passed', function () {
+    $booking = Booking::factory()->create([
+        'status' => BookingStatus::Confirmed,
+        'travel_date' => today()->subDay(),
+    ]);
+
+    expect(fn () => (new AssignDriverAction)->handle($booking, new AssignDriverData(
+        driverName: 'U Aung',
+        driverPhone: '+959111222333',
+        carPlateNumber: 'YGN-1234',
+    )))->toThrow(DriverAssignmentNotAllowedException::class);
+
+    expect($booking->refresh()->driver_name)->toBeNull();
+});
+
+test('it allows assigning a driver when the travel date is today', function () {
+    $booking = Booking::factory()->create([
+        'status' => BookingStatus::Confirmed,
+        'travel_date' => today(),
+    ]);
+
+    $updated = (new AssignDriverAction)->handle($booking, new AssignDriverData(
+        driverName: 'U Aung',
+        driverPhone: '+959111222333',
+        carPlateNumber: 'YGN-1234',
+    ));
+
+    expect($updated->driver_name)->toBe('U Aung');
+});
+
 test('it guards against assigning a driver to a cancelled booking', function () {
     $booking = Booking::factory()->create(['status' => BookingStatus::Cancelled]);
 
diff --git a/app-modules/identity/src/Filament/Pages/ManageAppSettings.php b/app-modules/identity/src/Filament/Pages/ManageAppSettings.php
index c449005..a25febf 100644
--- a/app-modules/identity/src/Filament/Pages/ManageAppSettings.php
+++ b/app-modules/identity/src/Filament/Pages/ManageAppSettings.php
@@ -4,6 +4,7 @@ namespace Modules\Identity\Filament\Pages;
 
 use BackedEnum;
 use Filament\Actions\Action;
+use Filament\Forms\Components\TagsInput;
 use Filament\Forms\Components\TextInput;
 use Filament\Forms\Components\Toggle;
 use Filament\Notifications\Notification;
@@ -12,6 +13,7 @@ use Filament\Schemas\Components\Actions;
 use Filament\Schemas\Components\Form;
 use Filament\Schemas\Components\Tabs;
 use Filament\Schemas\Components\Tabs\Tab;
+use Filament\Schemas\Components\Utilities\Get;
 use Filament\Schemas\Schema;
 use Filament\Support\Icons\Heroicon;
 use Illuminate\Support\Facades\Artisan;
@@ -61,6 +63,11 @@ class ManageAppSettings extends Page
             'back_seat_enabled' => (bool) config('booking.back_seat_enabled'),
             'whole_vehicle_enabled' => (bool) config('booking.whole_vehicle_enabled'),
             'front_seat_max_per_booking' => config('booking.front_seat_max_per_booking'),
+            'booking_admin_emails' => config('booking.admin_emails'),
+            'sms_enabled' => (bool) config('services.sms.enabled'),
+            'sms_server' => config('services.sms.sms_poh.server'),
+            'sms_token' => config('services.sms.sms_poh.token'),
+            'sms_sender' => config('services.sms.sms_poh.sender'),
         ]);
     }
 
@@ -111,7 +118,34 @@ class ManageAppSettings extends Page
                                         ->minValue(1)
                                         ->required()
                                         ->helperText('Max Front Seats a single booking may request.'),
+                                    TagsInput::make('booking_admin_emails')
+                                        ->label('Admin Emails')
+                                        ->required()
+                                        ->helperText('Notified on booking events. Press enter after each address.'),
                                 ]),
+                            Tab::make('SMS')
+                                ->schema([
+                                    Toggle::make('sms_enabled')
+                                        ->label('SMS Enabled')
+                                        ->live()
+                                        ->helperText('Whether driver/car SMS notifications are sent at all.'),
+                                    TextInput::make('sms_server')
+                                        ->label('SMS Server URL')
+                                        ->url()
+                                        ->maxLength(255)
+                                        ->required(fn (Get $get): bool => (bool) $get('sms_enabled')),
+                                    TextInput::make('sms_token')
+                                        ->label('SMS Token')
+                                        ->password()
+                                        ->revealable()
+                                        ->maxLength(255)
+                                        ->required(fn (Get $get): bool => (bool) $get('sms_enabled')),
+                                    TextInput::make('sms_sender')
+                                        ->label('SMS Sender')
+                                        ->maxLength(255)
+                                        ->helperText('Default sender name/number for outgoing SMS.'),
+                                ])
+                                ->columns(2),
                         ]),
                 ])
                     ->livewireSubmitHandler('save')
@@ -139,6 +173,11 @@ class ManageAppSettings extends Page
             'BOOKING_BACK_SEAT_ENABLED' => (bool) $state['back_seat_enabled'],
             'BOOKING_WHOLE_VEHICLE_ENABLED' => (bool) $state['whole_vehicle_enabled'],
             'BOOKING_FRONT_SEAT_MAX_PER_BOOKING' => (int) $state['front_seat_max_per_booking'],
+            'BOOKING_ADMIN_EMAILS' => implode(',', $state['booking_admin_emails'] ?? []),
+            'SMS_ENABLED' => (bool) $state['sms_enabled'],
+            'SMS_SERVER' => $state['sms_server'],
+            'SMS_TOKEN' => $state['sms_token'],
+            'SMS_SENDER' => $state['sms_sender'],
         ]);
 
         Artisan::call('config:clear');
diff --git a/app-modules/identity/tests/Feature/AuditLogTest.php b/app-modules/identity/tests/Feature/AuditLogTest.php
index 9a73631..ee597f0 100644
--- a/app-modules/identity/tests/Feature/AuditLogTest.php
+++ b/app-modules/identity/tests/Feature/AuditLogTest.php
@@ -28,6 +28,37 @@ test('a booking status transition is recorded in the audit log', function () {
     expect($activity->attribute_changes->get('attributes'))->toMatchArray(['status' => BookingStatus::Confirmed->value]);
 });
 
+test('assigning a driver is recorded in the audit log with who and when', function () {
+    $dispatcher = User::factory()->create();
+    $booking = Booking::factory()->create(['status' => BookingStatus::Confirmed]);
+
+    $this->actingAs($dispatcher);
+
+    $booking->update([
+        'driver_name' => 'U Aung',
+        'driver_phone' => '+959111222333',
+        'car_plate_number' => 'YGN-1234',
+        'car_model' => 'Tesla Model Y',
+    ]);
+
+    $activity = Activity::where('subject_type', Booking::class)
+        ->where('subject_id', $booking->id)
+        ->where('log_name', 'booking')
+        ->latest('id')
+        ->first();
+
+    expect($activity)->not->toBeNull();
+    expect($activity->attribute_changes->get('attributes'))->toMatchArray([
+        'driver_name' => 'U Aung',
+        'driver_phone' => '+959111222333',
+        'car_plate_number' => 'YGN-1234',
+        'car_model' => 'Tesla Model Y',
+    ]);
+    expect($activity->causer_type)->toBe(User::class);
+    expect($activity->causer_id)->toBe($dispatcher->id);
+    expect($activity->created_at)->not->toBeNull();
+});
+
 test('a catalog CRUD write is recorded in the audit log', function () {
     $company = EvCompany::factory()->create(['name' => 'Original Name']);
 
diff --git a/app-modules/identity/tests/Feature/ManageAppSettingsTest.php b/app-modules/identity/tests/Feature/ManageAppSettingsTest.php
index 49184ad..0163305 100644
--- a/app-modules/identity/tests/Feature/ManageAppSettingsTest.php
+++ b/app-modules/identity/tests/Feature/ManageAppSettingsTest.php
@@ -43,6 +43,11 @@ test('a super_admin can view and save app settings, writing them to .env', funct
             'back_seat_enabled' => false,
             'whole_vehicle_enabled' => true,
             'front_seat_max_per_booking' => 2,
+            'booking_admin_emails' => ['ops@evbooking.test', 'dispatch@evbooking.test'],
+            'sms_enabled' => true,
+            'sms_server' => 'https://sms.example.test/send',
+            'sms_token' => 'secret-token',
+            'sms_sender' => 'EVBooking',
         ])
         ->call('save')
         ->assertHasNoFormErrors();
@@ -56,7 +61,23 @@ test('a super_admin can view and save app settings, writing them to .env', funct
         ->toContain('APP_CURRENCY=MMK')
         ->toContain('BOOKING_BACK_SEAT_ENABLED=false')
         ->toContain('BOOKING_WHOLE_VEHICLE_ENABLED=true')
-        ->toContain('BOOKING_FRONT_SEAT_MAX_PER_BOOKING=2');
+        ->toContain('BOOKING_FRONT_SEAT_MAX_PER_BOOKING=2')
+        ->toContain('BOOKING_ADMIN_EMAILS=ops@evbooking.test,dispatch@evbooking.test')
+        ->toContain('SMS_ENABLED=true')
+        ->toContain('SMS_SERVER=https://sms.example.test/send')
+        ->toContain('SMS_TOKEN=secret-token')
+        ->toContain('SMS_SENDER=EVBooking');
+});
+
+test('sms server and token are required once sms is enabled', function () {
+    $superAdmin = User::factory()->create();
+    $superAdmin->assignRole('super_admin');
+    $this->actingAs($superAdmin);
+
+    Livewire::test(ManageAppSettings::class)
+        ->fillForm(['sms_enabled' => true, 'sms_server' => '', 'sms_token' => ''])
+        ->call('save')
+        ->assertHasFormErrors(['sms_server', 'sms_token']);
 });
 
 test('front seat max per booking must be at least 1', function () {
diff --git a/app-modules/payment/src/Providers/PaymentServiceProvider.php b/app-modules/payment/src/Providers/PaymentServiceProvider.php
index 6898f8b..96c070b 100644
--- a/app-modules/payment/src/Providers/PaymentServiceProvider.php
+++ b/app-modules/payment/src/Providers/PaymentServiceProvider.php
@@ -2,15 +2,10 @@
 
 namespace Modules\Payment\Providers;
 
-use Illuminate\Support\Facades\Event;
 use Illuminate\Support\ServiceProvider;
 use Modules\Payment\Enums\PaymentMethod;
-use Modules\Payment\Events\PaymentCompleted;
-use Modules\Payment\Events\RefundProcessed;
 use Modules\Payment\Factories\PaymentGatewayFactory;
 use Modules\Payment\Gateways\KbzMiniAppGateway;
-use Modules\Payment\Listeners\MarkBookingPaid;
-use Modules\Payment\Listeners\MarkBookingRefunded;
 use Modules\Payment\Models\Payment;
 use Modules\Payment\Observers\PaymentObserver;
 
@@ -28,9 +23,11 @@ class PaymentServiceProvider extends ServiceProvider
 
     public function boot(): void
     {
-        Event::listen(PaymentCompleted::class, MarkBookingPaid::class);
-        Event::listen(RefundProcessed::class, MarkBookingRefunded::class);
-
+        // MarkBookingPaid/MarkBookingRefunded are auto-discovered by
+        // internachi/modular's EventsPlugin (any Listeners/*.php with a
+        // handle(SomeEvent $event) signature) — registering them here too
+        // used to double-dispatch both listeners (see DriverAssigned's
+        // BookingServiceProvider for the same fix).
         Payment::observe(PaymentObserver::class);
     }
 }
diff --git a/app-modules/shared/src/Sms/SmsService.php b/app-modules/shared/src/Sms/SmsService.php
new file mode 100644
index 0000000..5f7b9f3
--- /dev/null
+++ b/app-modules/shared/src/Sms/SmsService.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Modules\Shared\Sms;
+
+use Illuminate\Http\Client\ConnectionException;
+use Illuminate\Support\Facades\Http;
+use Illuminate\Support\Facades\Log;
+
+/**
+ * Thin wrapper around the sms_poh gateway (the only provider configured
+ * today, config('services.sms')). No-ops when SMS is disabled so callers
+ * (queued listeners) can call send() unconditionally in every environment.
+ */
+class SmsService
+{
+    private readonly bool $enabled;
+
+    private readonly ?string $server;
+
+    private readonly ?string $token;
+
+    private readonly ?string $sender;
+
+    /**
+     * @param  array<string, mixed>|null  $config
+     */
+    public function __construct(?array $config = null)
+    {
+        $config ??= (array) config('services.sms');
+        $providerConfig = (array) ($config['sms_poh'] ?? []);
+
+        $this->enabled = (bool) ($config['enabled'] ?? false);
+        $this->server = $providerConfig['server'] ?? null;
+        $this->token = $providerConfig['token'] ?? null;
+        $this->sender = $providerConfig['sender'] ?? null;
+    }
+
+    public function send(string $to, string $message, ?string $from = null): bool
+    {
+        if (! $this->enabled || $this->server === null || $this->token === null) {
+            return false;
+        }
+
+        try {
+            $response = Http::withToken($this->token)
+                ->post($this->server, [
+                    'to' => $to,
+                    'message' => $message,
+                    'from' => $from ?? $this->sender,
+                ]);
+
+            Log::notice('Send SMS Response : '.$to.' '.$response->body());
+
+            return $response->successful();
+        } catch (ConnectionException $exception) {
+            Log::error('Send SMS Error : '.$to.' '.$exception->getMessage());
+
+            return false;
+        }
+    }
+}
diff --git a/app-modules/shared/tests/Unit/SmsServiceTest.php b/app-modules/shared/tests/Unit/SmsServiceTest.php
new file mode 100644
index 0000000..b5f1264
--- /dev/null
+++ b/app-modules/shared/tests/Unit/SmsServiceTest.php
@@ -0,0 +1,54 @@
+<?php
+
+use Illuminate\Support\Facades\Http;
+use Modules\Shared\Sms\SmsService;
+
+$config = [
+    'enabled' => true,
+    'sms_poh' => [
+        'server' => 'https://sms.test/send',
+        'token' => 'test-token',
+        'sender' => 'FamousLY4',
+    ],
+];
+
+test('send posts to the configured server with a bearer token and returns true on success', function () use ($config) {
+    Http::fake(['sms.test/*' => Http::response(['status' => 'ok'])]);
+
+    $result = (new SmsService($config))->send('+959111222333', 'Your driver is here.');
+
+    expect($result)->toBeTrue();
+    Http::assertSent(function ($request) {
+        return $request->url() === 'https://sms.test/send'
+            && $request->hasHeader('Authorization', 'Bearer test-token')
+            && $request['to'] === '+959111222333'
+            && $request['message'] === 'Your driver is here.'
+            && $request['from'] === 'FamousLY4';
+    });
+});
+
+test('send returns false and does not call the gateway when disabled', function () use ($config) {
+    Http::fake();
+    $config['enabled'] = false;
+
+    $result = (new SmsService($config))->send('+959111222333', 'Your driver is here.');
+
+    expect($result)->toBeFalse();
+    Http::assertNothingSent();
+});
+
+test('send returns false on a non-successful gateway response', function () use ($config) {
+    Http::fake(['sms.test/*' => Http::response(['error' => 'invalid'], 422)]);
+
+    $result = (new SmsService($config))->send('+959111222333', 'Your driver is here.');
+
+    expect($result)->toBeFalse();
+});
+
+test('send uses an explicit from over the configured sender', function () use ($config) {
+    Http::fake(['sms.test/*' => Http::response(['status' => 'ok'])]);
+
+    (new SmsService($config))->send('+959111222333', 'Hello', 'OtherSender');
+
+    Http::assertSent(fn ($request) => $request['from'] === 'OtherSender');
+});
diff --git a/config/services.php b/config/services.php
index 70453f9..d93fe6f 100644
--- a/config/services.php
+++ b/config/services.php
@@ -40,6 +40,15 @@ return [
         'jwt_algorithm' => env('FASTAPI_AGENT_JWT_ALGORITHM', 'HS256'),
     ],
 
+    'sms' => [
+        'enabled' => env('SMS_ENABLED', false),
+        'sms_poh' => [
+            'server' => env('SMS_SERVER'),
+            'token' => env('SMS_TOKEN'),
+            'sender' => env('SMS_SENDER'),
+        ],
+    ],
+
     'kbz' => [
         'app_id' => env('KBZ_APP_ID'),
         'merchant_code' => env('KBZ_MERCHANT_CODE'),