SMS API to send & receive text messages.

Boost sales and engagement with our SMS API — send instant OTPs, real-time alerts, and two-way messages worldwide.

Trusted by brands Globally

Why your brand needs TrustSignal SMS API!

smarter messaging for stronger customer connections!

90%

Open rate SMS has the highest open rate among all Marketing Channels

85%

Consumers still prefer SMS over other marketing channels – it's fast and direct

90%

Of SMS are read within 3 minutes, making it perfect for time-sensitive communication.

Why Your Brand Needs TrustSignal SMS API!

> 90%

open rate SMS has the highest open rate among all Marketing Channels

> 85%

of consumers still prefer SMS over other marketing channels – it's fast, direct, and always read.

> 90%

of SMS are read within 3 minutes, making it perfect for time-sensitive communication.

Enhance your customer experience with sms API

Deliver timely, personalized messages that build trust and loyalty. Our powerful SMS API helps you create seamless, two-way conversations that enhance every step of the customer journey.

✅ Send instant alerts, OTPs, & updates that matter to your customers.

✅ Get Developer-Friendly SMS API

Enhance customer experience with trustsignal APIs

Send promotional campaigns with sms API

Drive sales and customer engagement by sending bulk promotional messages instantly through our SMS API.

✅Reach your audience instantly.
✅ Get unmatched open rates and real-time delivery.

Send Promotional Campaign with TrustSignal SMS API

Send transactional messages with sms API

Keep customers informed in real-time with automated transactional SMS alerts using our SMS API.

✅ Reach your customers in real time

✅ Send timely updates and reminders

Send Transactional Messages from TrustSignal SMS API

Send OTPs with sms API

Deliver fast, secure one-time passwords (OTPs) to users with our reliable and scalable SMS API.

✅ Deliver OTPs within seconds

✅ Get 99.99% API uptime

Trusted by leading growth-driven brands

Supercharge your workflows by integrating TrustSignal with your favorite CRM, D2C, marketing, and automation tools.

The Integrations your workflow needs.

Transform your customer interactions, automate processes, customise experiences, and spur growth by integrating with CRMs you already use.

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LimeChat

Why use Trustsignal SMS API Services

Build instant trust with verified business profiles

DLT Help

End-to-end assistance with DLT registration and Template approval

Transparent Pricing

No hidden charges – just clear, upfront pricing you can trust.

URL link Shortener

Shorten your links, send attachments with SMS, and track your campaigns.

Multilingual Support

Speak your customer’s language.

Global
Presence

Reach customers worldwide with our SMS API

24*7
Support

We offer always-on support to help you anytime, anywhe

Industries We Serve

D2C

With Direct-to-Consumer (D2C), you can directly show your products, nudge hesitant buyers, answer questions quickly, and update customers on their orders. It's all about making their shopping easy and personal.

Retail

Enhance every step of the customer journey, from easy product discovery and smart selling to exclusive discounts, loyalty rewards, seamless reordering, and proactive after-sale support.

Financial Services

Deliver faster, smarter fintech experiences with instant balance updates, AI-driven portfolio insights, hassle-free claims, and seamless cross-selling opportunities.

Hospitality

Enhance guest experiences by showcasing your services, handling bookings easily, answering queries quickly, and simplifying reservation tracking.

Cafés & Restaurants

Restaurants and cafés can easily automate orders, reservations, and customer support, ensuring faster service, better engagement, and improved customer satisfaction through a single trusted channel.

This is how Trustsignal builds trust with its clients

Based on Google Reviews!!

Utkarsh Dilip Kapil
Utkarsh Dilip Kapil
2 months ago
We’ve had an excellent experience working with our Trustsignal and their platform has consistently exceeded our expectations. The user interface is intuitive and easy to navigate, making campaign setup, monitoring, and optimization a seamless process. Customer support has also been top-notch. The team is responsive, knowledgeable, and always willing to go the extra mile to resolve queries or provide strategic recommendations. Overall, our partnership with trustsignal has been incredibly valuable.
Nitish Vilvah
Nitish Vilvah
2 months ago
Huge thanks to this team - you all have been absolutely wonderful to work with! Every interaction has been super smooth, and the support has been top-notch. It honestly feels like we’re working with a team of friends who genuinely care and are always ready to jump in and help out. Really appreciate the positive energy, quick responses, and just how easy you make everything for us.
Amir Akhter Siddiqui
Amir Akhter Siddiqui
2 months ago
We've been using TrustSignal services for a while now, and have exceeded expectations. The integration was smooth, the interfaces are user-friendly, template approvals are timely, and support is fast and reliable.
S Lakshmi Charan
S Lakshmi Charan
2 months ago
Truly appreciate the support from TrustSignal for ensuring a smooth and efficient integration. Special thanks to Meenakshi for her dedicated efforts, clear communication, and timely assistance throughout the process.
Suraj Tiwari
Suraj Tiwari
2 months ago
Amazing support and always available when you need them. Truly reliable and highly recommended
 Simran Mishra
Simran Mishra
a year ago
TrustSignal is a great platform for a business's SMS communications. Its been more than a year that we are integrated with TrustSignal and their service is amazing. Integration was smooth, our day to day templates are approved on time even with a short notice. The support team is excellent, they respond immediately and solve the problem at hand real quick. Extremely happy with their service!
 Santosh Gangatiware
Santosh Gangatiware
a year ago
TrustSignal is top-notch! Their customer service team is exceptional, always ready to assist with any business queries. Highly recommended for their reliability and support.
Ready to transform your business communication?

Wait no more! Connect now and watch your business communication scale like never before

What We Offer
  • Omnichannel messaging at scale
  • Real-time delivery insights
  • SMS, RCS & WhatsApp support
  • Easy platform integrations
  • Secure & compliant infrastructure
  • Full onboarding & campaign support
Get your quote now!

Frequently Asked Questions

What is SMS API

An SMS API is a tool that lets your app or system send and receive text messages automatically. It helps businesses deliver OTPs, alerts, and promotions quickly and reliably, without manual work.

SMS marketing sends promotional or transactional messages via text to customers with high open and response rates for offers, updates, reminders, and more.

DLT (Distributed Ledger Technology) registration is a mandatory process in India for businesses sending SMS to customers. It ensures message authenticity and prevents spam, as required by TRAI (Telecom Regulatory Authority of India).

To send SMS, businesses must register their brand, headers, and message templates on a DLT portal.

A2P SMS (Application-to-Person SMS) refers to text messages sent from a software or application to a user’s mobile phone.

Common examples include OTPs, alerts, reminders, and promotional messages. It’s widely used by businesses for automated, high-volume communication.

Yes, many CPaaS providers offer analytics tools to track SMS delivery, open rates, and user engagement. This data can help businesses optimise their SMS campaigns and improve communication strategies.

Have More Questions?

Our team is ready to answer any questions you may have about your SMS API.