Bulk SMS

Send bulk SMS to the UK, Europe and Worldwide for large accounts and wholesale with the right SMS gateway provider.

Solution category

Tyr SMS Gateway
and worldwide

Bulk SMS is the sending of large quantities of SMS messages. This typically involves the use of an SMS gateway such as the Tyr SMS Gateway to send SMS to mobiles. Bulk SMS is usually associated with marketing campaigns or informational alerts and large broadcasts to customers, staff or other stakeholders. Its ability to send a high volume of short messages at the same time is what defines bulk SMS.

United Kingdom (UK)

Melrose Labs specialise in the sending of high volume bulk SMS using a variety of SMS APIs to mobiles on UK mobile networks. Being based in the UK, we have strong and reliable connections with the UK mobile network operators and a focus on delivering SMS to and from their networks. Mobile networks supported include EE, O2, Vodafone and Three.


Being located in Europe (at least geographically), we also specialise in sending high volume bulk SMS to mobiles on European mobile networks. Our focus is on achieving our goal of making Melrose Labs the #1 CPaaS provider in Europe, and our bulk SMS services are a key part of our strategy in achieving this.


Our services are not only relevant to Europe, but also to those wishing to use communications to reach their customers, staff and other stakeholders, regardless of their location in the world. Our bulk SMS messaging services have a global reach and can be relied upon throughout the world.

Use the find out more form below to get in contact with us to discuss your bulk SMS requirements.

How to send bulk SMS

SMS can be sent programmatically from an application using SMS APIs and libraries or SDKs, by using an SMS text messaging add-on or extension to software (e.g. Microsoft Excel), by using an application with in-built SMS text messaging capability or by using a SaaS (software-as-a-service) application through your web browser.

An example of a SaaS application that is a bulk SMS sender for marketing purposes is the Melrose Labs Campaign Solo service for SMS text marketing. Programming or scripting languages such as Python, PHP, Node.js, Go and others can be used to send and receive SMS with SMS APIs such as SMPP and REST.

Some web applications and portals that can be used for sending bulk SMS include:

How bulk SMS works

An SMS gateway allows an application to send and receive Short Message Service (SMS) messages to and from telecommunication networks. The vast majority of messages are routed via SMS gateways into mobile phone networks. Delivery reports (or delivery receipts) can be requested by the application in order to indicate the delivery outcome of the SMS. An SMS gateway typically sits between the end-user application that needs to send/receive SMS and a mobile network's Short Message Service Center (SMSC). Such gateways provide their customers with a choice of SMS APIs, including HTTP, SMTP, Short Message Peer-to-Peer (SMPP) and Web Services. Providers of SMS gateway services include SMS aggregators (such as the Melrose Labs Tyr SMS Gateway, located in the UK) and mobile operators. SMS gateways operate using software such as that provided by the Melrose Labs SMPP SMS Gateway platform.

When sending bulk SMS, an individual message can be sent in a single SMS or multiple SMS, depending on the length of the message. When receiving a long message (aka concatenated SMS), the whole message is displayed to the mobile user once the user's mobile has received all parts comprising it. It can also be used by mobile marketers to deliver Rich Messaging and Rich SMS via a link in an SMS, where the message displayed by the link contains an image, text, audio, video and CTAs. It can also be used to initiate a dialogue with the mobile user involving Conversational Chatbots.

Operate your own SMS gateway

Operate your own bulk SMS gateway service using the Melrose Labs SMPP SMS Gateway platform. Our cloud-based platform allows you to operate your own gateway and manage customers, billing, supplier connections, routing and reporting. Additional APIs and portals can be used with the platform to provide your customers with access to REST SMS APIs, web SMS portals, text marketing campaign portals and for other uses.

Development, Simulation and Testing

The Melrose Labs SMSC Simulator can be used to simulate an SMSC and the delivery to mobiles of a bulk SMS campaign. Simulation can be used to test the performance of your sending application and its behaviour. Inbound messages from mobiles to your application can be generated to simulate responses from the mobile users receiving your campaign message.

Melrose Labs SMPP Testing can be used to simulate a messaging application and the submission of messages as part of a bulk SMS campaign. Simulation can be used to test the performance and SMPP compliance and capability of your SMSC, SMS gateway or SMPP server and its behaviour. Load testing can be performed where one or more simulated clients submit messages to your server-under-test and allows you to determine the SMS/sec and submit_sm/submit_sm_resp latency.

Using the SMPP Load Test tool, perform an SMS load test using SMPP from your web browser and view the results in realtime. SMPP Load Test tool submits SMS messages using SMPP at the specified rate. Messages are sent to one or more mobile numbers in a range from a single source address or range of source addresses.

See our Developers section for APIs, tools and other documents.

Bulk SMS Services

Tyr SMS Gateway

SMS gateway platform for A2P, P2A, bulk, wholesale, business, text marketing and other applications to UK, France, Germany, Spain, Italy and other countries.

Rich Messaging

Rich media messaging that goes beyond SMS text for more engaging customer interactions.

SMSC Simulator

SMSC simulator for testing your SMS applications and messaging infrastructure using the SMPP protocol.

SMPP Testing

Test SMPP compliance and performance of SMS applications, SMSCs, SMS gateways and SMPP servers.


Cloud-based reliable and high capacity SS7/SIGTRAN SMSC platform with SMPP API for delivery of SMS to mobiles.

SMPP SMS Gateway

Cloud-based high capacity and high reliability SMPP SMS Gateway platform with advanced routing. Supports A2P and P2A SMS.


REST-SMPP bridge for offloading the sending of SMS.

SMPP Load Balancer

SMPP load balancer supporting MO and MT SMS for high availability, reliability and capacity.

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