How much does bulk SMS cost in Kenya?

Bulk SMS pricing in Kenya starts from KES 0.25 per SMS with Celcom Africa. Our volume-based pricing plans: PING (Below 5,000 SMS) at KES 0.60/SMS, PULSE (5,000-50,000 SMS) at KES 0.50/SMS, ECHO (50,000-300,000 SMS) at KES 0.40/SMS, WAVE (300,000-1,000,000 SMS) at KES 0.30/SMS, and BLAST (Above 1,000,000 SMS) at KES 0.25/SMS. All plans include 99%+ delivery guarantee, real-time reports, and 24/7 support. No setup fees or hidden charges. Start with 50 free SMS. Visit https://celcomafrica.com/bulk-sms for details.

Do you offer SMS Gateway API documentation for developers?

Yes! Celcom Africa provides comprehensive SMS Gateway API documentation for developers. Our RESTful API supports multiple programming languages including PHP, Python, Node.js, Java, Ruby, and .NET. The API documentation includes endpoint URLs, request/response formats, authentication methods, error codes, code samples, and integration guides. We also offer SDKs for popular frameworks, webhook support for delivery status updates, and a sandbox environment for testing. The API enables developers to send SMS programmatically, check delivery status, manage contacts, schedule messages, and retrieve analytics. Integration typically takes under 30 minutes. Our developer support team provides technical assistance for complex implementations. Visit https://celcomafrica.com/developers-center or https://celcomafrica.com/sms-gateway for complete API documentation and integration guides.

What is Bulk SMS and how does it work?

Bulk SMS (Short Message Service) is a communication technology that enables businesses and organizations to send text messages to large groups of recipients simultaneously through a single platform. The process involves connecting to an SMS gateway, which routes messages through mobile network operators to deliver them to recipient phones. Unlike individual SMS, bulk messaging allows sending thousands or millions of messages efficiently with features like scheduling, personalization, and delivery tracking. Celcom Africa's Bulk SMS platform operates across Kenya's major networks including Safaricom, Airtel, Telkom, and Equitel, ensuring comprehensive coverage. Users can send messages through a web-based dashboard or integrate via REST API for automated messaging. The system provides real-time delivery reports, 99% delivery guarantee, and CAK-compliant messaging to ensure reliable, legal communication. Visit https://celcomafrica.com/bulk-sms to learn more about how Celcom Africa's enterprise-grade Bulk SMS solution works.

How much does Bulk SMS cost, and what affects the price?

Bulk SMS pricing typically depends on volume, route type (promotional vs transactional), and sender ID requirements. Celcom Africa offers transparent, volume-based pricing that becomes more cost-effective as your messaging volume increases: Ping Plan (1–5,000 SMS) at KES 0.60 per SMS, Pulse Plan (5,001–50,000 SMS) at KES 0.50 per SMS, Echo Plan (50,001–300,000 SMS) at KES 0.40 per SMS, Wave Plan (300,001–1,000,000 SMS) at KES 0.30 per SMS, and Blast Plan (1,000,001+ SMS) at KES 0.25 per SMS. Custom sender ID registration costs KES 6,500 per network operator (one-time fee) through Celcom Africa's CAK-compliant registration process. Transactional SMS routes may have different pricing as they bypass DND filters and reach all subscribers. Additional factors affecting costs include international messaging rates, premium features like scheduled campaigns, and API usage for automated systems. Celcom Africa provides competitive pricing with no hidden fees, volume discounts, and flexible payment options. For detailed pricing information tailored to your needs, visit https://celcomafrica.com/bulk-sms-pricing or contact Celcom Africa's sales team.

What are the main uses of Bulk SMS for businesses?

Bulk SMS serves multiple business communication needs across industries. Marketing and promotions help businesses send promotional offers, product launches, and sales alerts directly to customers' phones with high open rates. Transactional messaging includes order confirmations, payment receipts, shipping notifications, and account alerts. Customer engagement involves appointment reminders, event notifications, satisfaction surveys, and loyalty program updates. Operational communications cover system alerts, password resets, OTP (One-Time Password) verification, and security notifications. Industry-specific applications include healthcare appointment reminders and medication alerts, education fee payment notifications and exam schedules, finance transaction alerts and loan repayment reminders, retail flash sales and order updates, and logistics delivery notifications. NGOs use it for donor updates and program announcements, while SACCOs utilize it for member communication and contribution reminders. Celcom Africa's platform supports all these use cases with industry-specific templates, automated workflows, and compliance tools. The platform's 99% delivery guarantee and real-time analytics help businesses measure ROI and optimize their messaging strategies. Explore industry-specific solutions at https://celcomafrica.com.

What's the difference between promotional SMS and transactional SMS?

Promotional SMS are marketing messages used for advertising products, services, offers, discounts, and brand awareness campaigns. These messages are subject to DND (Do Not Disturb) regulations in Kenya and can only be delivered to subscribers who haven't opted out. Promotional routes are cheaper (starting from KES 0.25/SMS) but have delivery restrictions. Transactional SMS are service-related messages providing important information about transactions, account activity, or system notifications. Examples include OTP codes, order confirmations, payment receipts, shipping notifications, appointment reminders, and password resets. Transactional messages bypass DND filters and reach all subscribers regardless of opt-out status, as they're considered essential service communications. They use dedicated premium routes that prioritize delivery speed and reliability. Celcom Africa supports both promotional and transactional messaging with appropriate routing. The platform automatically filters promotional messages against DND databases to ensure CAK compliance. For transactional SMS, proper documentation may be required and rates may be slightly higher due to premium route costs. Visit https://celcomafrica.com/bulk-sms to learn more about message types and routing options.

How do I send Bulk SMS through Celcom Africa?

Sending Bulk SMS through Celcom Africa is simple and takes just 3 steps: 1) Create a free account at https://celcomafrica.com/register (no credit card required, get 50 free SMS), 2) Upload your contacts via CSV, Excel, or add manually, and 3) Compose your message and send instantly or schedule for later. Our intuitive web dashboard includes a character counter (160 characters per SMS segment), message templates, personalization with dynamic fields like {name}, and real-time delivery tracking. Choose between promotional or transactional routes based on your message type. Optionally, register a custom sender ID for branded messaging - Celcom Africa handles the CAK registration process. The platform provides detailed delivery reports, analytics, and campaign performance metrics. For automation, use our REST API to send SMS programmatically from your CRM, ERP, or custom applications. Start sending with free test credits to experience Celcom Africa's reliable Bulk SMS service.

What is an SMS API, and why is it useful for developers?

An SMS API (Application Programming Interface) is a set of protocols and tools that allows software applications to send and receive text messages programmatically without manual intervention. For developers, SMS APIs enable automated messaging workflows where applications trigger SMS notifications based on user actions, system events, or scheduled processes. Common use cases include sending OTP codes for two-factor authentication, order confirmations in e-commerce systems, appointment reminders from healthcare or service providers, password reset links, payment alerts, delivery notifications, and system monitoring alerts. Celcom Africa's RESTful SMS API supports multiple programming languages including PHP, Node.js, Python, Java, Ruby, and .NET, making it accessible to developers using different tech stacks. The API provides webhook support for real-time delivery status updates, bulk sending capabilities, scheduled messaging, and comprehensive documentation with code examples. Integration typically takes minutes rather than days, and developers can test with Celcom Africa's sandbox environment before going live. The API follows REST principles, returns JSON responses, and includes error handling for robust integration. For developers building applications that require reliable SMS functionality, Celcom Africa's API offers 99% uptime, low latency (2-5 second delivery), and detailed logging. Visit https://celcomafrica.com/sms-gateway or https://celcomafrica.com/developers-center for API documentation and integration guides.

How can I integrate Celcom Africa's SMS API into my system?

Integrating Celcom Africa's SMS API into your application is a straightforward process designed for developers of all skill levels. First, create an account at https://celcomafrica.com/register and log into the dashboard. Navigate to the API section to generate your unique API key and access token - keep these credentials secure as they authenticate your requests. Review Celcom Africa's comprehensive API documentation which includes endpoint URLs, request parameters, response formats, error codes, and code samples in multiple languages. The API uses standard HTTP POST requests with JSON payloads containing recipient numbers, message content, and optional parameters like sender ID, route type, and scheduling options. Common integration patterns include webhook callbacks for delivery status updates, batch sending for multiple recipients, and scheduled messaging for future campaigns. Test your integration using Celcom Africa's sandbox environment or free test credits before production deployment. The API integrates seamlessly with popular platforms including WordPress, WooCommerce, Magento, Shopify, Salesforce, Zoho CRM, custom web applications, mobile apps (iOS/Android), and backend services. Celcom Africa provides SDKs and code examples for faster integration, and the support team offers technical assistance for complex implementations. The API supports both synchronous and asynchronous operations, includes rate limiting protection, and provides detailed logging for debugging. Once integrated, monitor your API usage, delivery rates, and costs through Celcom Africa's analytics dashboard. For step-by-step integration guides and code examples, visit https://celcomafrica.com/developers-center.

What are best practices for successful SMS marketing campaigns?

Effective SMS marketing campaigns require strategic planning, compliance awareness, and optimization based on performance data. First, always obtain explicit consent from recipients before sending marketing messages - this ensures CAK compliance and builds trust. Craft concise messages (under 160 characters when possible) that clearly communicate value, as SMS screens are small and attention spans are limited. Personalize messages using recipient names or relevant details to increase engagement rates - Celcom Africa's platform supports dynamic field insertion for personalization. Include clear call-to-action (CTA) statements like 'Reply YES to opt-in' or 'Visit [website] for more' to guide recipient actions. Timing matters significantly - send messages during business hours (9 AM - 8 PM) on weekdays, avoid early mornings and late nights, and consider time zones for national campaigns. Segment your audience based on preferences, purchase history, or demographics to send relevant messages that resonate. Test different message variations, timing, and frequency to optimize performance - Celcom Africa's A/B testing features help identify winning strategies. Monitor key metrics including delivery rates, open rates, click-through rates, and conversion rates through Celcom Africa's analytics dashboard. Maintain appropriate frequency (not more than 2-4 promotional messages per month per subscriber) to avoid being marked as spam. Include opt-out instructions in every message for regulatory compliance. Use a recognizable sender ID (custom sender ID registered through Celcom Africa) to increase trust and open rates. Finally, integrate SMS with other marketing channels for cohesive campaigns. Celcom Africa's platform provides templates, scheduling tools, and real-time analytics to help you implement these best practices effectively.

What's the difference between promotional and transactional SMS?

Understanding the distinction between promotional and transactional SMS is crucial for compliance and effective messaging. Promotional SMS are marketing messages used for advertising products, services, offers, discounts, event invitations, newsletters, and brand awareness campaigns. These messages are subject to DND (Do Not Disturb) regulations in Kenya, meaning they can only be delivered to subscribers who haven't opted out of promotional messaging. Promotional routes are typically cheaper but have delivery restrictions. Transactional SMS are service-related messages that provide important information about transactions, account activity, or system notifications. Examples include OTP codes for authentication, order confirmations, payment receipts, shipping notifications, appointment reminders, password resets, account balance alerts, and system notifications. Transactional messages bypass DND filters and reach all subscribers regardless of their opt-out status, as they're considered essential service communications. They typically use dedicated routes that prioritize delivery speed and reliability. Celcom Africa supports both promotional and transactional messaging with appropriate routing. For transactional SMS, Celcom Africa requires proper documentation and may charge slightly higher rates due to the premium route costs. The platform automatically filters promotional messages against DND databases to ensure compliance with CAK regulations. Businesses should carefully categorize their messages - misusing transactional routes for promotional content can result in penalties, while sending transactional content through promotional routes may result in undelivered messages to opted-out subscribers. Celcom Africa's dashboard clearly distinguishes between these message types and helps businesses choose the appropriate route for maximum deliverability and compliance.

How can organizations like schools, NGOs, and SACCOs benefit from Bulk SMS?

Bulk SMS provides cost-effective, efficient communication solutions for various organizational sectors in Kenya. Educational institutions (schools, colleges, universities) use Bulk SMS for fee payment reminders, exam schedules and results, parent-teacher meeting notifications, holiday announcements, emergency alerts, attendance tracking, and assignment deadlines. The high delivery rate ensures critical information reaches parents and students promptly. Non-Governmental Organizations (NGOs) utilize Bulk SMS for donor engagement, program announcements, volunteer recruitment, event invitations, impact reporting, fundraising campaigns, beneficiary communication, and awareness drives. The affordability of Bulk SMS allows NGOs to maximize their communication budgets while reaching broad audiences. SACCOs (Savings and Credit Cooperatives) leverage Bulk SMS for loan repayment reminders, dividend notifications, annual general meeting announcements, contribution alerts, account balance updates, new product launches, and member engagement. Studies show that SMS reminders can reduce missed payments by up to 35% and increase member participation in SACCO activities. Churches and religious organizations use Bulk SMS for service schedules, event announcements, donation appeals, prayer requests, and community updates. Celcom Africa serves thousands of organizations across these sectors with tailored solutions including specialized templates, bulk import tools for member databases, scheduling features for regular communications, and affordable pricing plans starting from KES 0.25 per SMS. The platform's CAK compliance ensures legal messaging, while features like custom sender IDs help organizations maintain brand recognition. Real-time delivery reports enable organizations to track communication effectiveness and ensure critical messages are received. For sector-specific use cases and pricing, organizations can contact Celcom Africa or visit https://celcomafrica.com.

How can I measure the success of my SMS campaigns?

Measuring SMS campaign success requires tracking multiple key performance indicators (KPIs) throughout the campaign lifecycle. Delivery metrics include sent count (total messages submitted), delivered count (successfully received by recipients), failed count (undelivered messages with reasons), and delivery rate percentage (delivered/sent × 100). Celcom Africa's platform provides real-time delivery status updates, showing whether messages were delivered, failed, pending, or rejected, along with failure reasons like invalid numbers, network errors, or DND blocks. Engagement metrics track open rates (SMS doesn't have true open tracking, but delivery implies receipt), click-through rates if links are included, reply rates for two-way messaging, and conversion rates (desired actions taken after receiving SMS). Performance analytics include cost per message, total campaign cost, cost per conversion, and return on investment (ROI). Timing analysis shows optimal sending times based on delivery patterns and engagement data. Celcom Africa's comprehensive analytics dashboard displays all these metrics in easy-to-understand charts and reports, exportable in CSV or PDF formats for deeper analysis. The platform also provides comparative analytics showing performance trends over time, segment performance breakdowns, and A/B test results. For automated systems, Celcom Africa's API returns detailed delivery status for each message, enabling custom analytics integration. Best practices for measurement include setting clear campaign objectives before sending, benchmarking against industry standards (average SMS open rate is 98% compared to email's 20%), tracking conversions beyond delivery, analyzing optimal timing patterns, and continuously optimizing based on data. Regular monitoring through Celcom Africa's dashboard helps identify issues early, optimize campaigns in real-time, and improve future campaign performance. For advanced analytics requirements, businesses can integrate Celcom Africa's webhook notifications into their own analytics systems.

What is the difference between transactional and promotional SMS?

Transactional SMS are messages sent to users to convey information regarding transactions, such as payment updates, order and delivery confirmations, and OTPs. They are typically triggered by user actions and are not intended for marketing, and are generally exempt from DND restrictions. Promotional SMS are marketing communications that promote products, services, events, or offers to a large group. They are typically sent with the intention to advertise or engage customers and may be subject to DND regulations.

What is Bulk SMS and how does it work in Kenya?

Bulk SMS is the process of sending large volumes of SMS messages to many recipients at once. In Kenya, businesses and organizations use bulk SMS platforms or SMS APIs to quickly relay important information, alerts, or marketing promotions to customers' mobile phones across the country.

What are the benefits of using Bulk SMS services?

Bulk SMS offers fast, direct communication with high open rates. It is cost-effective for businesses, non-profits, and government agencies, ensuring timely delivery of alerts, reminders, and marketing campaigns to a wide audience.

Can I automate transactional and promotional SMS?

Yes. Most bulk SMS platforms support automation, allowing you to schedule campaigns or send triggered messages like OTPs, alerts, and promotional content based on user activity or predefined schedules.

Are Bulk SMS messages regulated in Kenya?

Yes. Bulk SMS in Kenya is regulated by the Communications Authority of Kenya (CAK). Regulations cover sender identification, message content, DND filtering, and opt-out mechanisms, ensuring user privacy and spam control.

What are common uses for Bulk SMS Kenya?

Common uses include sending transactional notifications, emergency alerts, reminders, marketing messages, two-factor authentication (OTP), and updates for appointments or deliveries.

Bulk SMS API | Best Bulk SMS Service Provider |Celcom Africa

What is Bulk SMS?

Bulk SMS is a bulk messaging service that enables businesses to send text messages to thousands of recipients simultaneously through a single platform. Unlike traditional one-to-one messaging, Celcom Bulk SMS allows you to reach large audiences instantly with personalized, targeted messages.

Instant Delivery

Messages delivered in 2-5 seconds via direct network connections to Safaricom, Airtel, and Telkom. Perfect for time-sensitive alerts and notifications.

98% Open Rate

98% of SMS messages are read within 3 minutes, far surpassing email's 20-30% open rate. This ensures your messages reach customers when they matter most.

99%+ Delivery

CAK-compliant messaging with built-in DND filtering and opt-out management. Enterprise-grade infrastructure ensures reliable delivery for mission-critical apps.

How to Send Bulk SMS

Learning how to send bulk SMS is straightforward. Whether you're a bulk message sender using our web dashboard or integrating via bulk SMS API, sending messages takes just minutes.

Sign Up Free

Create your account in 30 seconds. Get 50 free SMS credits to test our platform. No credit card required.

Upload Contacts

Import contacts via CSV or Excel files, or add manually. Our platform supports bulk import and contact segmentation.

Compose & Send

Write your message, choose your SMS sender ID, and select route type (promotional or transactional). Send instantly or schedule for later.

Track Results

Monitor delivery status in real-time through our dashboard. Access comprehensive analytics showing delivery rates, engagement metrics, and campaign performance.

RESTful Bulk SMS API: Our SMS gateway provides RESTful endpoints supporting PHP, Python, Node.js, Java, Ruby, and .NET. Make HTTP POST requests with JSON payloads containing recipient numbers, message content, and SMS sender ID.

Integration: Complete integration in under 30 minutes with comprehensive documentation, code samples, and webhook support for delivery status updates.

API Documentation SDKs & Libraries Integration Guide

Related Services:

SMS Gateway • A2P SMS Gateway • Webhooks

Why Choose Bulk SMS?

Discover why 10,000+ businesses in Kenya trust our bulk SMS service as their primary communication channel. From cost savings to instant reach, bulk messaging delivers measurable results.

Instant Delivery

Bulk SMS messages are delivered within 2-5 seconds through our direct SMS gateway connections. 98% of SMS messages are read within 3 minutes, ensuring your time-sensitive alerts and promotions reach customers immediately.

Affordable

With bulk SMS pricing starting from KES 0.25 per SMS, businesses can reduce communication costs by up to 60% compared to traditional methods. No setup fees, monthly subscriptions, or hidden charges—you only pay for SMS credits you use.

Reliable

99%+ delivery guarantee with direct network connections ensures your messages reach recipients reliably. CAK-compliant bulk SMS services include built-in security features, DND filtering, and opt-out management.

Scalable

Send messages to 10 recipients or 10 million—our bulk messaging service scales effortlessly. Whether you're a bulk message sender using the dashboard or integrating via bulk SMS API, flexible options include scheduled campaigns and real-time messaging.

Personalized

Personalize each message with recipient names, account numbers, or custom variables using dynamic field insertion. Personalized bulk SMS increases engagement rates by up to 40% and creates a more professional customer experience.

Analytics

Track delivery rates, open rates, engagement metrics, and campaign performance with comprehensive analytics. Our bulk SMS service provider platform exports reports in CSV or PDF formats and provides real-time dashboards to optimize your bulk messaging campaigns.

Bulk SMS Pricing

As Kenya's leading bulk SMS service provider, Celcom Africa offer transparent bulk SMS pricing with no hidden fees. Whether you're a bulk message sender using our bulk messaging service or integrating via bulk SMS API, pricing starts from KES 0.25 per SMS with volume discounts. View detailed pricing plans.

Bulk SMS pricing in Kenya typically depends on volume, route type (promotional vs transactional), and SMS sender ID requirements. Higher messaging volumes qualify for better rates. Custom SMS sender ID registration costs KES 6,500 per network operator (one-time fee) but increases open rates by up to 40%. Learn more about SMS branding.

CALCULATOR

Calculate Your Cost

Monthly SMS Volume

<5K 10,000 2M+

PULSE

Rate: KES 0.50

Total: KES 5,000

PING

Below 5,000

KES 0.60

KES 500 - 2,999

All Networks

99%+ delivery
Real-time reports
24/7 support

Popular

PULSE

5,000 – 50,000

KES 0.50

KES 2,500 - 25,000

All Networks

All PING features
API access
Custom sender ID

ECHO

50,000 – 300,000

KES 0.40

KES 20,000 - 120,000

All Networks

All PULSE features
Priority support
Advanced analytics

WAVE

300,000 – 1,000,000

KES 0.30

KES 90,000 - 300,000

All Networks

All ECHO features
Dedicated account manager
Custom integrations

BEST VALUE

BLAST

Above 1,000,000

KES 0.25

From KES 250,000

All Networks

All WAVE features
Dedicated manager
SLA guarantee

Types of Bulk SMS in Kenya Transactional, Promotional, and Alert Messages

Celcom Africa Bulk SMS enables large-scale communication by delivering SMS messages to many recipients instantly. The main categories of bulk SMS include transactional, promotional, and alert messages. The right choice depends on your intended communication—whether providing updates, marketing, or urgent notifications.

Bulk SMS service types in Kenya - promotional SMS, transactional SMS, and OTP messaging with API integration

1. Transactional Bulk SMS

Transactional SMS are used to share essential and time-sensitive information with recipients. These messages are typically triggered by user actions or system events, such as purchase confirmations, password resets, or appointment reminders.

Payment updates and receipts
Order confirmations and delivery notifications
One-Time Passwords (OTP) and verification codes

Example:
“Dear John, your payment of KES 2,500 has been received. Order #12345 will be delivered tomorrow.”

2. Promotional Bulk SMS

Promotional SMS are intended for marketing and advertising. They are used to inform recipients about new products, special offers, discounts, and events, helping organizations reach a wider audience and drive engagement or sales.

Announcing sales and limited-time promotions
Sharing event invitations or product launches
Re-engaging inactive customers

Example:
“Get 20% off your next purchase! Visit our store or shop online. Offer valid until Sunday.”

3. Bulk SMS Alerts & Notifications

Alert messages are used to quickly notify users of urgent or important information such as emergency updates, system maintenance, weather warnings, or critical service changes. These messages are prioritized for immediate delivery.

Emergency alerts and safety notifications
Service interruptions or scheduled maintenance info
Regulatory or important policy updates

Example:
“Notice: Our services will be offline for scheduled maintenance between 9 PM and 11 PM tonight.”

Try Bulk SMS Kenya Today

Use Cases

Marketing

Promotions & campaigns

Transactional

OTPs & alerts

Reminders

Appointments & deadlines

Security

OTP & verification

Marketing & Promotions

Send promotional offers, flash sales, product launches, and discount alerts directly to customers' phones. Perfect for SMS marketing Kenya campaigns. A Nairobi retail chain increased sales by 35% using our bulk messaging service for weekend promotions.

Common Examples:

Flash sale announcements
New product launches
Loyalty program updates
Seasonal promotions
Event invitations

Proven Results:

35% sales increase

SMS Sender ID: Build Brand Trust

Your SMS sender ID is the name or number that appears when recipients receive your messages. As a bulk SMS sender, using a custom SMS sender ID (your company name) instead of a generic phone number increases trust, recognition, and open rates by up to 40%.

Why Use Custom SMS Sender ID?

Messages appear with your company name (e.g., "CELCOMAFRICA" instead of "254712345678"), building brand recognition and trust.

Increases message open rates by up to 40%
Builds brand recognition and trust
Professional appearance for SMS marketing Kenya campaigns

How to Register SMS Sender ID

Registering your SMS sender ID is simple. As a bulk SMS service provider, Celcom Africa handles the entire CAK registration process for you.

One-time fee of KES 6,500 per network operator
Covers Safaricom, Airtel, and Telkom registration
CAK-compliant and approved for branded messaging

Once approved, your SMS sender ID works across all your bulk SMS campaigns. Use it with our dashboard or bulk SMS API for consistent branded messaging.

For Developers

Bulk SMS API & SMS Gateway Integration

Integrate bulk SMS API with our RESTful SMS gateway for programmatic bulk messaging. Send transactional SMS, OTPs, alerts, and notifications via JSON payloads. Learn how bulk SMS works with webhooks and real-time delivery reports. Code samples in PHP, Python, Node.js, Java, Ruby, and .NET. Deploy in <30 minutes.

PHP Python Node.js Java Ruby .NET

Bulk SMS API Documentation

Complete bulk SMS API reference with RESTful endpoints, authentication, and code samples. Learn how to send bulk messages, track delivery status, schedule campaigns, and receive webhooks. Includes integration guides for PHP, Python, Node.js, Java, Ruby, and .NET. Understand SMS gateway architecture and best practices.

View Docs

POPULAR

Bulk SMS API SDKs & Tools

Pre-built bulk SMS API SDKs for PHP, Python, Node.js, Java, Ruby, and .NET. Accelerate bulk messaging integration with helper methods, sandbox testing, Postman collections, and webhook simulators. Learn error handling patterns, sync/async strategies, and automatic retry mechanisms for reliable SMS service delivery.

Explore

Enterprise SMS Gateway Infrastructure

Enterprise A2P SMS gateway architecture with 99.9% uptime SLA, 2-5s delivery, and real-time webhooks. Understand how bulk SMS service scales with failover, load balancing, DDoS protection, and HTTPS/TLS encryption. Learn why 10,000+ businesses trust our SMS gateway for mission-critical messaging.

A2P Gateway

Bulk SMS Use Cases & Integration Patterns

Learn how bulk messaging powers fintech (OTP/2FA, transaction alerts), e-commerce (order confirmations, shipping updates), CRM (automated communications), healthcare (appointment reminders), and enterprise apps (system alerts, authentication). Discover bulk SMS service integration patterns and best practices.

<30

Minutes

API Docs Gateway

Bulk SMS Features: Why Choose Celcom Africa

Enterprise-grade bulk SMS gateway with real-time analytics, direct network connections, and instant bulk SMS API integration. Our bulk SMS platform is built for Kenyan businesses that demand reliability, compliance, and scalability for their bulk SMS campaigns. For automated messaging, explore our SMS Gateway API or A2P SMS Gateway for enterprise solutions. View transparent pricing plans starting from KES 0.25/SMS.

Real-Time Delivery Reports

Track every SMS with instant delivery confirmations, detailed analytics, and exportable reports. Monitor campaign performance, delivery rates, and optimize messaging strategies with actionable insights.

CAK-Compliant Messaging

Fully compliant with Communications Authority of Kenya regulations. Built-in DND filtering, opt-out management, and sender ID registration ensure your campaigns meet all legal requirements.

Secure API Integration

Developer-friendly A2P SMS Gateway API with comprehensive documentation, SDKs in multiple languages, and webhook support. Integrate SMS functionality into your CRM, ERP, or mobile app seamlessly. View pricing plans starting from KES 0.25/SMS.

SMS Sender ID & Branding

Build brand trust with custom SMS sender ID registration. Your SMS sender ID appears as your company name instead of a phone number, increasing open rates by up to 40%. Learn how to register your SMS sender ID for branded messaging.

Scheduled & Automated Messaging

Schedule campaigns in advance or set up automated triggers. Perfect for appointment reminders, promotional campaigns, and time-sensitive alerts without manual intervention.

Personalized Content & Dynamic Fields

Personalize each message with recipient names, account numbers, or custom variables. Dynamic field insertion increases engagement rates and creates a more professional customer experience.

What you get when you use our platform.

Our portal is packed with attractive features and functionalities, to enhance your communication strategy.

Contact Management

Our platform provides an address book feature that allows you to keep your contacts organized and easily accessible whenever you need them. You can create groups for friends, clients, staff, and more!

Message Scheduling

With our message scheduling feature, you can plan your communications ahead of time. Just set the date and time, and your messages will be delivered exactly when you want them to be.

Delivery Reports

Our platform provides detailed delivery reports, giving you insights into the success of your messaging campaigns. You can use these insights to refine your communication strategy and improve your results.

Multiple User Mode

Our multiple user mode feature allows several users to access the platform at the same time. This promotes teamwork and ensures efficient utilization of the platform.

Bulk SMS Pricing: Celcom Africa vs Standard Providers

See why 10,000+ Kenyan businesses choose Celcom Africa as their bulk SMS service provider. Compare bulk SMS prices and features. Our bulk messaging service offers the best value for bulk SMS Kenya needs.

Feature	Celcom Africa Best Bulk SMS Provider	Standard Providers Typical Competitors
Price per SMS	KES 0.25 Starting price (volume discounts available)	KES 0.50 - KES 1.50
Delivery Speed	2-5 seconds Direct network connections (Safaricom, Airtel, Telkom)	10-30 seconds (indirect routing)
Delivery Rate	99%+ Guaranteed delivery with real-time reports	85-95% (no guarantee)
API Integration	Instant REST API with comprehensive documentation & SDKs	Limited or complex setup
Support	24/7 Kenyan Support Phone, email, WhatsApp, live chat	Business hours only
CAK Compliance	✓ Fully Compliant Built-in DND filtering & opt-out management	Manual compliance
Free Trial	50 Free SMS No credit card required	Limited or no free trial

Empower Your Business & Grow with Bulk SMS Marketing

Experience the power and convenience of Celcom Africa Bulk SMS and Bulk Email platform and revolutionize your messaging strategy. Contact Our Team to learn more.

Get Started Now

Related Services & Solutions

Explore our comprehensive communication services to build a complete messaging strategy for your business. From SMS Gateway API integration for developers to A2P SMS Gateway for enterprises, we provide scalable solutions for every use case.

SMS Gateway API

Integrate SMS into your applications with our RESTful SMS Gateway API. Perfect for developers building fintech apps, CRMs, ERP systems, and custom solutions. Features include:

RESTful API with JSON responses
Real-time delivery status webhooks
SDKs for PHP, Python, Node.js, Java, Ruby, .NET
99%+ delivery guarantee
Comprehensive API documentation

Learn More →

Bulk Email Marketing

Combine bulk SMS and bulk email for powerful multi-channel marketing campaigns. Our professional email platform includes:

Email automation and drip campaigns
Advanced analytics and A/B testing
SPF, DKIM, and DMARC compliance
Responsive email templates
Integration with SMS for unified messaging

Learn More →

Enterprise

A2P SMS Gateway

Enterprise-grade Application-to-Person (A2P) SMS Gateway for mission-critical messaging. Ideal for high-volume transactional SMS including:

OTP and two-factor authentication (2FA)
Transaction alerts and payment confirmations
99.9% uptime SLA guarantee
Dedicated account management
Priority routing and delivery optimization

Learn More →

Developer Resources & Integration Guides

Whether you're integrating bulk SMS API into a fintech application, e-commerce platform, or CRM system, our comprehensive developer resources help you get started quickly.

<30 min

Average Integration Time

Bulk SMS | SMS Gateway API | A2P SMS Gateway | Bulk Messaging Service | Trusted by 10,000+ businesses in Kenya. CAK-compliant messaging with 99%+ delivery guarantee. Starting from KES 0.25 per SMS with volume discounts. Contact us for enterprise solutions.

Ready to Transform Your Communication?

Join 10,000+ businesses across Africa and the world using Bulk SMS from Celcom Africa to reach customers instantly, reduce costs, and drive engagement. Start with free test credits - no credit card required.

Get Started - Free Test Credits Schedule a Demo

99% Delivery Guarantee | CAK Compliant | 24/7 Support | KES 0.25/SMS Starting Price

Get Started Free - 50 Free SMS

Customer Testimonials

See Why Clients Trust Our Bulk SMS Services

We have worked with Celcom for the last 6 years. I find their service affordable; they deliver within the promised timelines and with precision. I have particularly liked their customer experience which I can only describe as first class. They are also keen and professional. System availability is also impressive and reliable. I would recommend 100%.

Reuben Kimani

Username Investment

Celcom is the best SMS service provider I have to work with. It has supported our growth as SafeBoda through there fair prices, great delivery rate and above all the best and fast Customer Support. Great Job Celcom!!

Chebet Millicent

Safe Boda

Amazing company - your SMS rates, customer service and support are super good. Your systems are always super, rare or no downtimes. As a result, our business has enjoyed immense growth since we partnered with you. We are proud to do business with you. Keep up the good work. I recommend you to the world.

Joseph Gitonga

Username Investment

Celcom Bulk SMS is a very reliable and affordable solution well aligned to the current customer experience needs. I have worked with them on several client's projects and the feedback is always positive; happy with the customer experience feedback. The kicker solution in my view is the SMS integration with billing and collection system which has enhanced collection. HIGHLY recommend the services to any customer. Thank you, Celcom, and keep up the good work!

John Gakunyi

Acemil Consultant