Laravel Fast2SMS is a first-class Laravel package for sending SMS and WhatsApp messages via the Fast2SMS API. It provides a fluent, type-safe API, Laravel Notifications support, queue integration, a powerful fake for testing, and a rich exception hierarchy — so you can build reliable messaging features with confidence.

The most complete Fast2SMS integration for Laravel:

SMS + OTP + DLT + WhatsApp
Queue + Notifications
Prevents wasting SMS money in production

Features
Requirements
Installation
Quick Start
Configuration
Cost-Saving Features
Sending SMS
Sending WhatsApp Messages
Laravel Notifications
Queuing
Events & Listeners
Testing
Artisan Commands
Phone Validation
Error Handling
Upgrade Guide
Contributing
License

Features

📱 SMS — Quick, OTP, and DLT routes with flash and bulk support
💬 WhatsApp — Text, image, document, location, and interactive messages
🔔 Laravel Notifications — SmsChannel and WhatsAppChannel out of the box
⚡ Queue support — Dispatch sends as background jobs with per-send overrides
🧪 Fake & assert — Fast2sms::fake() with 16 rich assertion helpers
🚨 Typed exceptions — AuthenticationException, RateLimitException, ApiException, and more
💰 Cost-saving features — Recipient deduplication (on by default), dedup guard, throttle, balance gate, batch splitting, invalid-recipient stripping
🔍 PHPStan level 6 — Fully typed, zero suppressions
🛠 Artisan commands — Balance monitor, WABA details, event discovery, IDE helper
🇮🇳 Indian phone validation — Fast2smsPhone rule class

Requirements

Requirement	Version
PHP	^8.3
Laravel	^11.0 \| ^12.0 \| ^13.0
Fast2SMS account	Sign up free

Installation

Install via Composer:

composer require itxshakil/laravel-fast2sms

The package auto-discovers its service provider. Publish the config file:

php artisan vendor:publish --tag=fast2sms-config

Add your API key to .env:

FAST2SMS_API_KEY=your_api_key_here

Full installation guide: docs/installation.md

Quick Start

use Shakil\Fast2sms\Facades\Fast2sms;

// Send a quick SMS
$response = Fast2sms::quick(
    numbers: '9876543210',
    message: 'Your OTP is 123456',
);

if ($response->isSuccess()) {
    echo 'SMS sent! Request ID: ' . $response->requestId;
}

Configuration

After publishing, edit config/fast2sms.php. All keys can be set via environment variables:

Key	Env Variable	Default	Description
`api_key`	`FAST2SMS_API_KEY`	—	Your Fast2SMS API key (required)
`default_sender_id`	`FAST2SMS_DEFAULT_SENDER_ID`	`FSTSMS`	Default DLT sender ID
`default_route`	`FAST2SMS_DEFAULT_ROUTE`	`dlt`	Default SMS route
`base_url`	—	`https://www.fast2sms.com/dev`	Fast2SMS API base URL (do not change unless instructed)
`timeout`	—	`30`	HTTP request timeout in seconds
`driver`	`FAST2SMS_DRIVER`	`api`	`api` for real sends, `log` for local dev
`database_logging`	`FAST2SMS_DATABASE_LOGGING`	`false`	Log sends to database — see docs/db-logging.md
`recipients.deduplicate`	`FAST2SMS_DEDUP_RECIPIENTS`	`true`	Remove duplicate numbers before every send
`recipients.batch_size`	`FAST2SMS_BATCH_SIZE`	`0`	Split large lists into chunks (`0` = disabled)
`validation.strip_invalid_recipients`	`FAST2SMS_STRIP_INVALID`	`false`	Strip invalid numbers before sending
`balance_gate.enabled`	`FAST2SMS_BALANCE_GATE`	`false`	Enable balance check before every send
`balance_gate.threshold`	`FAST2SMS_BALANCE_THRESHOLD`	`10.0`	Balance alert threshold (₹)
`balance_gate.abort`	`FAST2SMS_BALANCE_ABORT`	`true`	Throw `InsufficientBalanceException` when balance is low
`deduplication.enabled`	`FAST2SMS_DEDUP_ENABLED`	`false`	Enable idempotency / dedup guard
`deduplication.ttl`	`FAST2SMS_DEDUP_TTL`	`60`	Dedup window in seconds
`deduplication.store`	`FAST2SMS_DEDUP_STORE`	`null`	Cache store for dedup guard (`null` = default store)
`throttle.enabled`	`FAST2SMS_THROTTLE_ENABLED`	`false`	Enable send-rate throttle
`throttle.max_per_minute`	`FAST2SMS_THROTTLE_MAX`	`60`	Max sends per minute
`throttle.store`	`FAST2SMS_THROTTLE_STORE`	`null`	Cache store for send-rate throttle (`null` = default store)
`whatsapp.default_phone_number_id`	`FAST2SMS_WHATSAPP_PHONE_NUMBER_ID`	—	Default WhatsApp phone number ID
`whatsapp.default_waba_id`	`FAST2SMS_WHATSAPP_WABA_ID`	—	Default WhatsApp Business Account ID
`whatsapp.version`	`FAST2SMS_WHATSAPP_VERSION`	`v24.0`	WhatsApp API version
`events.enabled`	`FAST2SMS_EVENTS_ENABLED`	`true`	Enable/disable event dispatching
`queue.enabled`	`FAST2SMS_QUEUE_ENABLED`	`false`	Send via queue
`queue.connection`	`FAST2SMS_QUEUE_CONNECTION`	`null`	Queue connection name
`queue.name`	`FAST2SMS_QUEUE_NAME`	`default`	Queue name
`queue.tries`	`FAST2SMS_QUEUE_TRIES`	`3`	Max job attempts

Use FAST2SMS_DRIVER=log in local/testing environments to log messages instead of making real API calls.

Full configuration reference: docs/configuration.md

Cost-Saving Features

Most cost-saving features are opt-in and disabled by default — enable only what you need. Recipient deduplication is the exception: it is enabled by default.

Recipient Deduplication

Automatically removes duplicate numbers from the recipient list before every send. This is enabled by default — set to false to disable:

FAST2SMS_DEDUP_RECIPIENTS=true   # default: true

Invalid Recipient Stripping

Validates each number against the Fast2smsPhone rule, logs a warning for each removed number, and throws ValidationException if all numbers are invalid:

FAST2SMS_STRIP_INVALID=true

Idempotency / Dedup Guard

Prevents the same message being sent twice within a configurable window (applies to both SMS and WhatsApp):

FAST2SMS_DEDUP_ENABLED=true
FAST2SMS_DEDUP_TTL=60   # seconds

Throws DuplicateSendException on a repeated identical call within the TTL.

Send-Rate Throttle

Limits the number of sends per minute using a sliding-window cache counter (applies to both SMS and WhatsApp):

FAST2SMS_THROTTLE_ENABLED=true
FAST2SMS_THROTTLE_MAX=60

Throws ThrottleExceededException when the limit is reached.

Balance Gate

Checks your wallet balance before every send and fires LowBalanceDetected. When abort is true, throws InsufficientBalanceException to prevent the API call (applies to both SMS and WhatsApp):

FAST2SMS_BALANCE_GATE=true
FAST2SMS_BALANCE_THRESHOLD=10.0
FAST2SMS_BALANCE_ABORT=true

Batch Splitting

Splits large recipient lists into chunks and issues one API call per chunk:

FAST2SMS_BATCH_SIZE=100   # 0 = disabled

SMS Credit Estimation

Use SmsMessage helpers to estimate cost before sending:

use Shakil\Fast2sms\Notifications\Messages\SmsMessage;

$msg = new SmsMessage('Your OTP is 123456');

$msg->charCount();      // 22
$msg->isUnicode();      // false
$msg->creditCount();    // 1
$msg->exceedsOneSms();  // false

Full cost-saving features guide: docs/cost-saving-features.md

Full upgrade guide: UPGRADING.md

Sending SMS

Quick SMS

use Shakil\Fast2sms\Facades\Fast2sms;

Fast2sms::quick(numbers: '9876543210', message: 'Hello from Fast2SMS!');

OTP SMS

Fast2sms::otp(
    numbers: '9876543210',
    otpValue: '123456',
);

DLT SMS

Fast2sms::dlt(
    numbers: ['9876543210', '9123456789'],
    templateId: 'your_template_id',
    variablesValues: 'Your order #1234 has been shipped.',
    senderId: 'MYSHOP',
);

Flash SMS

Fast2sms::to('9876543210')
    ->message('Flash message!')
    ->flash()
    ->send();

Multiple Recipients

Fast2sms::quick(
    numbers: ['9876543210', '9123456789', '9000000001'],
    message: 'Broadcast message',
);

Full SMS guide: docs/sms-guide.md

Sending WhatsApp Messages

Phone number format for WhatsApp: Always include the country code prefix (e.g. 919876543210 for India — 91 + 10-digit number). This differs from SMS, which accepts 10-digit numbers directly.

Text

Fast2sms::whatsapp()
    ->to('919876543210')
    ->sendText('Hello from Fast2SMS!');

Image

Fast2sms::whatsapp()
    ->to('919876543210')
    ->sendImage('https://example.com/image.jpg');

Document

Fast2sms::whatsapp()
    ->to('919876543210')
    ->sendDocument('https://example.com/invoice.pdf');

Location

Fast2sms::whatsapp()
    ->to('919876543210')
    ->sendLocation(latitude: 28.6139, longitude: 77.2090, name: 'New Delhi');

Interactive

Fast2sms::whatsapp()
    ->to('919876543210')
    ->sendInteractive([
        'type' => 'button',
        'body' => ['text' => 'Choose an option'],
        'action' => ['buttons' => [/* ... */]],
    ]);

Convenience alias: Fast2sms::viaWhatsApp($to) is shorthand for Fast2sms::whatsapp()->to($to). Both are public API; whatsapp()->to(...) is the canonical form.

Full WhatsApp guide: docs/whatsapp.md

Laravel Notifications

SMS Notification

use Illuminate\Notifications\Notification;
use Shakil\Fast2sms\Enums\SmsRoute;
use Shakil\Fast2sms\Notifications\Messages\SmsMessage;

class OrderShipped extends Notification
{
    public function via(object $notifiable): array
    {
        return ['fast2sms'];
    }

    public function toSms(object $notifiable): SmsMessage
    {
        return SmsMessage::create("Your order #{$this->order->id} has shipped!")
            ->withRoute(SmsRoute::QUICK);
    }
}

Add routeNotificationForFast2sms() to your notifiable model (e.g. User) to tell the channel which number to use:

// app/Models/User.php
public function routeNotificationForFast2sms(): string
{
    return $this->phone_number;
}

WhatsApp Notification

use Illuminate\Notifications\Notification;
use Shakil\Fast2sms\Notifications\Messages\WhatsAppMessage;

class OrderShippedWhatsApp extends Notification
{
    public function via(object $notifiable): array
    {
        return ['whatsapp'];
    }

    public function toWhatsApp(object $notifiable): WhatsAppMessage
    {
        return WhatsAppMessage::text("Your order #{$this->order->id} has shipped!");
    }
}

Add routeNotificationForWhatsapp() to your notifiable model (e.g. User) to tell the channel which number to use:

// app/Models/User.php
public function routeNotificationForWhatsapp(): string
{
    return $this->phone_number;
}

Full notifications guide: docs/notifications.md

Queuing

Enable queuing in .env:

FAST2SMS_QUEUE_ENABLED=true
FAST2SMS_QUEUE_NAME=sms
FAST2SMS_QUEUE_TRIES=3

Then send as usual — the package dispatches a background job automatically:

Fast2sms::quick(numbers: '9876543210', message: 'Queued message');

Override queue settings per-send:

Fast2sms::onQueue('high-priority')
    ->onConnection('redis')
    ->quick(numbers: '9876543210', message: 'Urgent!');

Full queuing guide: docs/queuing.md

Events & Listeners

The package dispatches the following events:

Event	When
`SmsSent`	After a successful SMS send
`SmsFailed`	When an SMS send fails
`WhatsAppSent`	After a successful WhatsApp send
`WhatsAppFailed`	When a WhatsApp send fails
`LowBalanceDetected`	When wallet balance drops below threshold

Listening to Events

// In EventServiceProvider
protected $listen = [
    \Shakil\Fast2sms\Events\SmsSent::class => [
        \App\Listeners\LogSmsSent::class,
    ],
    \Shakil\Fast2sms\Events\LowBalanceDetected::class => [
        \App\Listeners\NotifyAdminOfLowBalance::class,
    ],
];

Discover All Events

php artisan fast2sms:events

Full events guide: docs/events.md

Testing

Use Fast2sms::fake() to prevent real HTTP calls in tests:

use Shakil\Fast2sms\DataTransferObjects\SmsParameters;
use Shakil\Fast2sms\Enums\SmsRoute;
use Shakil\Fast2sms\Facades\Fast2sms;

Fast2sms::fake();

// Run code that sends SMS...
$this->post('/send-otp', ['phone' => '9876543210']);

// Assert
Fast2sms::assertSmsSent();
Fast2sms::assertSmsSentTo('9876543210');
Fast2sms::assertSmsSentWithMessage('Your OTP');
Fast2sms::assertSmsSentCount(1);
Fast2sms::assertSmsNotSent();
Fast2sms::assertSmsSentWithRoute(SmsRoute::QUICK);

// Closure-based assertion
Fast2sms::assertSmsSent(function (SmsParameters $params): bool {
    return str_contains($params->message, 'OTP');
});

// Assert nothing was sent
Fast2sms::assertNothingSent();

WhatsApp Assertions

use Shakil\Fast2sms\Enums\WhatsAppType;

Fast2sms::assertWhatsAppSent();
Fast2sms::assertWhatsAppSentTo('919876543210');
Fast2sms::assertWhatsAppSentCount(1);
Fast2sms::assertWhatsAppSentWithType(WhatsAppType::TEXT);
Fast2sms::assertWhatsAppNotSent();

// Closure-based assertion
use Shakil\Fast2sms\DataTransferObjects\WhatsAppParameters;

Fast2sms::assertWhatsAppSent(function (WhatsAppParameters $params): bool {
    return $params->to === '919876543210'
        && $params->type === WhatsAppType::TEXT;
});

Combined Assertions

// Assert nothing was sent (SMS or WhatsApp)
Fast2sms::assertNothingSent();

// Assert total sends across both channels (counts typed SMS + WhatsApp records)
Fast2sms::assertSentCount(3);

// Assert exact total sends via raw sentMessages log entries
Fast2sms::assertSentTimes(3);

// Generic low-level assertion with optional closure (closure receives raw array payload)
Fast2sms::assertSent(fn (array $message) => $message['numbers'] === ['9876543210']);

// Assert no message matching criteria was sent
Fast2sms::assertNotSent(fn (array $message) => $message['numbers'] === ['9876543210']);

Stopping the Fake

Fast2sms::fake() stores the fake in a static property. Call Fast2sms::stopFaking() in tearDown to restore real HTTP behaviour when managing the fake lifecycle manually in plain PHPUnit tests:

protected function tearDown(): void
{
    Fast2sms::stopFaking();
    parent::tearDown();
}

Note: When using Orchestra Testbench or Laravel's full boot cycle the container is re-booted between tests, so stopFaking() is usually not required.

Full testing guide: docs/testing.md

Artisan Commands

Command	Description
`fast2sms:balance`	Check wallet balance and alert if below threshold
`fast2sms:waba`	Show WhatsApp Business Account details
`fast2sms:events`	List all package events
`fast2sms:ide-helper`	Generate IDE helper stub for better autocomplete (non-production only)

# Check balance with custom threshold
php artisan fast2sms:balance --threshold=500

# Output as JSON (for scripting/CI)
php artisan fast2sms:balance --json

# Show WABA details
php artisan fast2sms:waba

# List all events
php artisan fast2sms:events

# Generate IDE helper
php artisan fast2sms:ide-helper

Phone Validation

Use the Fast2smsPhone rule to validate Indian mobile numbers:

use Shakil\Fast2sms\Rules\Fast2smsPhone;

$request->validate([
    'phone' => ['required', 'string', new Fast2smsPhone],
]);

The rule validates 10-digit Indian mobile numbers starting with 6–9.

Error Handling

All exceptions extend Fast2smsException, so you can catch broadly or specifically:

use Shakil\Fast2sms\Exceptions\ApiException;
use Shakil\Fast2sms\Exceptions\AuthenticationException;
use Shakil\Fast2sms\Exceptions\Fast2smsException;
use Shakil\Fast2sms\Exceptions\NetworkException;
use Shakil\Fast2sms\Exceptions\RateLimitException;
use Shakil\Fast2sms\Exceptions\ValidationException;

try {
    Fast2sms::quick(numbers: '9876543210', message: 'Hello!');
} catch (AuthenticationException $e) {
    // Invalid API key — check FAST2SMS_API_KEY
} catch (RateLimitException $e) {
    // Too many requests — back off and retry
} catch (ValidationException $e) {
    // Invalid input — $e->getMessage() describes the problem
} catch (ApiException $e) {
    // API returned an error — check $e->getMessage()
} catch (NetworkException $e) {
    // Network timeout or connection failure
} catch (Fast2smsException $e) {
    // Catch-all for any other package exception
}

Exception Reference

Exception	When
`ConfigurationException`	Invalid config (missing API key, bad driver)
`ValidationException`	Invalid input (empty numbers, bad phone format)
`AuthenticationException`	Invalid or missing API key (HTTP 401)
`RateLimitException`	Too many requests (HTTP 429)
`ServerException`	Fast2SMS server error (HTTP 5xx)
`ApiException`	Other API error (4xx)
`NetworkException`	Network timeout or connection failure
`DuplicateSendException`	Identical send repeated within the deduplication TTL
`InsufficientBalanceException`	Wallet balance too low when Balance Gate `abort` is `true`
`ThrottleExceededException`	Send-rate limit reached for the configured window

Full error handling guide: docs/error-handling.md

Full API reference: docs/api-reference.md

Upgrade Guide

Upgrading from v1.x? See UPGRADING.md for the full migration guide, including:

New exception types to catch
Readonly DTO changes
Fake assertion API changes
Deprecated method renames (content() → withContent(), to() → withNumbers())
Response type-hint updates

Also available as an extended guide: docs/upgrade-v1-to-v2.md

Contributing

Contributions are welcome! Please read CONTRIBUTING.md before submitting a pull request.

# Run the full test suite
composer test

# Static analysis
composer analyse

# Auto-fix code style
composer lint:fix

# Full QA pipeline
composer qa

License

The MIT License (MIT). Please see LICENSE.md for more information.

Laravel Fast2Sms Laravel Package

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