Bulk SMS service

Our bulk SMS service is the fast, cost-effective, and reliable way to send business communications at scale.

Take your customer interactions to the next level with RCS business messaging. From image carousels to instant action buttons, RCS empowers your brand to create interactive experiences that build loyalty, boost engagement, and drive conversions.

  • Automate text messages to customers and staff 
  • Quick set up via our online platform or SMS API
  • Prices starting from 2.2p per message

Why choose Esendex for bulk SMS?

Send Bulk SMS campaigns to your customers using any device connected to the internet. Benefit from these key features:

Easy data import

Import data from different file formats to quickly and efficiently reach thousands of contacts in one go.

Contact segmentation

Deliver the right message to the right people with custom groups. Use our platform to send bulk SMS to a large number of people simultaneously or specific contacts in a group.

Personalisation

Mass communication doesn’t need to feel like mass communication when you can use dynamic fields to include personal details like first and last names. 

Message scheduling

Schedule promotions, greetings, appointment reminders, and notifications ahead of time. Perfect for messages that need to be delivered out of working hours.

Flexible and scalable

Send as many or as few messages as you want, depending on business requirements.

Fast and reliable

Our SMS gateway allows coverage across all UK mobile networks. We commit to processing 90% of your messages within 5 seconds and 95% within 20 seconds.

GDPR compliant

Certified to ISO 27001 standards and fully GDPR compliant, we have strict controls in place to ensure your customers’ data is protected. Read more here.

Dedicated support

Our dedicated technical support team is available 24/7 in the UK to provide technical help and answer any questions, free of charge.

Let’s start sending, together.

Get your messages seen with bulk SMS

Bulk text messaging via SMS is one of the most effective ways to communicate with your customers, employees and contacts. SMS open rates are up to 98% – almost three times higher than email. And response rates can be just 90 seconds, compared to 90 minutes from traditional channels. Get your messages delivered, seen and responded to.

bulk sms
Mass texting in minutes

With our reliable and user-friendly business text message platform, you can start sending to individuals or groups quickly and securely. Get started right away, without the need for training or installing additional software, and send messages from anywhere.

How does a bulk SMS service work?

Bulk SMS works in a similar way to email marketing. You can send out messages in bulk via an SMS API or online SMS platform, and segment your audience according to who you want to target. An SMS gateway connects your business messaging application with the mobile network, enabling you to reach people on their phones.

Creating a short message is easier and quicker than writing a long email newsletter – and, as long as it’s clear, concise and engaging, it’s a powerful way to communicate. SMS software allows you to schedule messages to maximise responses, and automatically send out confirmation details and reminders when someone makes a booking on another platform. 

bulk SMS
function fibonacciSequence(n) {
  if (n <= 0) {
    return [];
  } else if (n === 1) {
    return [0];
  } else {
    const sequence = [0, 1];
    while (sequence.length < n) {
      const nextNumber = sequence[sequence.length - 1] + sequence[sequence.length - 2];
      sequence.push(nextNumber);
    }
    return sequence;
  }
}

// Example: Output the first 10 Fibonacci numbers
const numberOfTerms = 10;
const fibSequence = fibonacciSequence(numberOfTerms);
console.log(`The first ${numberOfTerms} Fibonacci numbers are: ${fibSequence.join(', ')}`);

Bulk SMS or email?

Hundreds of marketing emails might land in someones inbox on a weekly or even daily basis. As a result, open rates and engagement for email can be low when compared with SMS.

Email is still a powerful communications tool when used correctly. However, text messages can provide clear and hyper-targeted information to the right people at exactly the right time. You won’t have to compete for attention in cluttered inboxes, nor worry that timely messages will be missed because someone doesn’t have internet access or a smartphone.

50% of all emails are spam – which means our inboxes are more cluttered than ever.
55% of people prefer SMS messaging for notifications like appointment reminders over email.
SMS messages tend to be concise and engaging, so typical click-through rates are typically much higher.
Millennials receive an average of 67 text messages per day – which makes it easier to get your message across.

“SMS marketing is a vital and effective part of our CRM and customer acquisition activities at RED Driving School. Esendex provides a simple, straightforward, and cost-effective solution.”

Red driving school car

Bulk SMS FAQs

What is bulk SMS?

As the name suggests, bulk SMS is simply when a business or other organisation sends out text messages to mobile devices on a mass scale. They are typically used in marketing, for appointment or reservation reminders, and for security such as resetting passwords or providing a one time password (OTP). You might also see bulk SMS referred to as mass text messaging, mass SMS, or application to person (A2P) messaging. 

How can you send a bulk SMS?

To send a bulk SMS campaign, first you’ll need an SMS provider to facilitate sending your message.

How many messages can I send in one go?

With bulk SMS you can send thousands of messages at once. Our system is built to manage large numbers of messages and send them out at speed. We aim to process 90% of your messages within five seconds and 95% within 20 seconds.

Can you automate bulk SMS messages?

Yes! Our SMS automations feature allows you to set up and send bulk messages with ease – including appointment confirmations, reminders and marketing messages. We can also help you to optimise your messages for better results.

How do I track the success of bulk SMS?

As with email, you can track open rates and subsequent actions like appointments attended, and uptake on a special offer or deal. If you are having any issues with your bulk SMS, our technical support team is on hand to help or answer any questions.

How do you make sure your bulk SMS is legally compliant?

As the bulk SMS sender, you are responsible for ensuring that communications adhere to data protection laws such as GDPR.

What’s next?

Business messaging reimagined