iSMS Services Introduction

About iSMS

iSMS is a bulk SMS service focused in Malaysia, Singapore, and the Philippines. Our powerful SMS engine is also capable of sending international SMS to over 700 mobile operators in more than 200 countries worldwide. We have been providing reliable SMS services to corporate customers since 2007.

If you are looking to reach your customers via SMS or WhatsApp, we encourage you to try iSMS because:

• Responsive and dedicated support — call or email us and we will always help
• One of the most reliable SMS and messaging engines in the market
• Feature-packed platform covering SMS, WhatsApp Business API, OTP, and email services

SMS remains one of the most cost-efficient marketing tools, reaching customers directly on their mobile devices. With our enhanced iSMS features, you can even conduct surveys and collect customer feedback before launching a marketing campaign.

• View all bulk SMS features: iSMS Features
• View worldwide SMS rates: SMS Rates

2-Way SMS

iSMS offers a unique 2-way SMS service. You send the SMS, your customer replies, and you receive the reply directly at your email — or via webhook callback to your system. iSMS 2-Way SMS is responsive, fast, and very reliable. Ideal for surveys, customer feedback, and opt-in campaigns.

Learn more: iSMS Reply URL Feature →

SMS API

iSMS provides a simple and secure SMS API for developers to integrate SMS capabilities into their applications. Many of our customers are software developers and companies integrating SMS into ERP systems, CRM platforms, and mobile applications. Our API is compatible with all major programming languages including PHP, Java, C#, VB.net, Node.js, ASP, and C++.

Learn more: SMS API Documentation →

SMS OTP — One Time Password

With SMS OTP, you can verify and identify users by their mobile phone number. OTP is widely used in mobile apps, bank account verification, e-commerce checkout, and other transaction authentication workflows. You can easily generate and deliver OTP codes using our SMS API.

Learn more: iSMS OTP Service →

WhatsApp Business API (WABA)

iSMS is an official WhatsApp Business API provider. Send OTP codes, marketing messages, transactional notifications, and AI-powered chatbot responses through the official WhatsApp Business API channel — with Blue Tick verification and true handset-level delivery tracking (Sent → Delivered → Read).

Learn more: WhatsApp Business API →

Email Services

In addition to SMS and WhatsApp, iSMS also provides bulk email and transactional email services via SMTP API. High deliverability, real-time analytics, bounce management, and easy integration make it a complete messaging solution for your business.

Learn more: Email Services Overview →