Clickatell’s bulk SMS gateway allows you to send or receive Short Message Service (SMS) communications to or from more than 1000 mobile networks.


As a global leader in mobile messaging Clickatell enables businesses to connect, interact, and transact with their customers wherever they are. Our SMS gateway is capable of delivering high volumes of bulk SMS messages to over 220 territories worldwide and our SMS services are scalable, reliable, and extremely easy to implement.

What is SMS and why should your business use it?

SMS (commonly referred to as a text messaging) stands for Short Message Service which is a protocol used for sending short text messages via mobile networks. It’s one of the oldest and most commonly used forms of communication thanks to its universal nature – even the most basic cellphones can receive this form of text messaging.

Clickatell’s SMS gateway enables businesses to send bulk SMS messages to 6 billion mobile phone users across the globe – that’s over 85% of the world population. It comes as no surprise then, that one-way (1-Way) bulk SMS messaging is often a preferred marketing and communication channel for businesses, and not only due to its vast reach.

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Here are a couple of reasons why businesses are choosing to use one-way SMS:

No Lead time

SMS messages can be created and delivered to the recipient’s phone within a matter of minutes.

Time to open

Not only are nearly all SMS messages opened, they’re typically read within 90 seconds of being sent.

Low cost

SMS marketing costs significantly less than other advertising options such print, radio, or TV. Combined with the brilliant open rates, the low cost makes bulk SMS one of the best options for a maximum return on investment (ROI) that you’ll find.

Open rate

SMS enjoys a staggering open rate of 98%. That means that nearly every single text message sent is being opened. In comparison, emails are only opened 22% of the time.

What is the difference between time critical and standard delivery?

Your routing profile determines the way text messages are delivered to handsets once they leave the Clickatell SMS gateway and can be configured when you create your message integration.

Time critical delivery

Time critical delivery via premium routes is perfect for high-priority text messages such as one-time PINs, time-sensitive alerts, and transactional messages. This offers the fastest and most direct line of delivery for your text messages.

Standard delivery

Standard delivery uses reliable routes at lower rates and is ideal for messages that aren't time-sensitive such as promotions, brand announcements or CRM messages.


Two-way text messaging

What is two-way SMS?

Research has shown that as much as 64% of customers want to be able to engage with companies via SMS services. Two-way (2-way) messaging enables businesses to do just that. Clickatell’s two-way messaging solutions work with a short code or long number that enables your customers to reply to your SMS messages allowing you to start meaningful conversations with them.


Here are just a few ways that you can use two-way text messaging to grow your business:

Lead generationEncourage potential customers to send a text message to your short code to get a quote for your products or services.

Improved customer supportTwo-way text messaging is ideal for any organization offering a support service. SMS is uniquely personal, instantaneous, and enables the customer to receive exactly the help or support they’re looking for – no matter where they are.

SMS surveysGet valuable customer feedback with SMS surveys that allow your customers to rate products or services.

Order tracking and delivery confirmationsTwo-way messaging is the perfect way to enable customers to track their orders. By simply sending a text message with a tracking number to your short code, customers can receive a response with the latest status of their delivery.

What are my options?

Short codes

A short code is a memorable number between 3 and 7 digits in length. Short codes are ideal for SMS marketing campaigns and promotions where you want people to easily remember your number. Short codes are country specific and can't be used if you want to receive messages from international customers so you’ll need to have a short code in the country where your customers are.

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Long numbers

Two-way long numbers, like the name implies, are long telephone numbers which can be up to 16 digits in length but are usually the length of a standard local phone number. Long numbers are cheaper to use than short codes and allow you to receive replies from local and selected international destinations. If you need to receive replies to your text messages but it’s not as important that people easily remember your number, then a long number is the most cost-effective solution to start a two-way conversation with your customers.

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Why choose Clickatell as your bulk SMS service provider?

Join more than 15000 global brands who have chosen Clickatell as their preferred SMS gateway provider.


Text messaging that deliversAchieve a staggering 98% open rate for your bulk SMS messages. One-way and two-way text messaging options available.

Easy SMS integrationIntegrate Clickatell Platform into your existing systems or apps – quickly and hassle-free. Use only 1 SMS gateway API to reach them all.

Global SMS coverageClickatell’s SMS platform delivers billions of messages across 1000+ networks every month for top companies like Telegram, WhatsApp and IMDb.

Cloud-based interfaceCloud-hosted user-friendly web interface offering simple wizard-driven code generation that’s quick and easy to use.

Clickatell Platform

Clickatell Platform is a powerful bulk SMS system that enables you to send messages securely, reliably, and instantly via the Clickatell REST API.


Platform is cloud-hosted, user-friendly and the wizard-driven code generation makes integration into your existing systems super easy. Platform is scalable, capable of delivering thousands of SMS messages per second, and completely customizable to suit your specific text messaging needs.

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Use Clickatell Validate (HLR) to increase the ROI of your bulk SMS campaigns

Our Home Location Register (HLR) number look-up service offers an easy solution to clean your text messaging database and optimize costs.

It enables you to increase the effectiveness of your bulk SMS campaigns with updated and valid customer data. Save money by only sending messages to valid numbers significantly reducing the number of undelivered SMS messages.

The information provided by Clickatell Validate (HLR) will allow you to:

  • Plan and target bulk SMS marketing campaigns more effectively

  • Improve the accuracy of your database

  • Reduce costs by identifying and removing invalid mobile numbers

  • Identify invalid and landline numbers that cannot receive SMS messages

  • Identify hidden costs by flagging mobile numbers that are roaming internationally

If you are interested in using the HLR service, please contact our sales division.

Contact our sales division