Reliable SMPP that scales with your customers

SMPP Gateway API for carriers, aggregators, and high volume SMS

Send time-critical messages at scale with a dependable SMPP gateway.

Get persistent connections, strong delivery reporting, and predictable performance for OTP, alerts, and high-throughput campaigns.

Built by SMS.to, a trusted sms gateway provider serving global brands.

  • Up to 2,000+ messages per second on the SMPP Gateway API
  • TLS encryption and carrier-grade routing for better deliverability
  • Real-time delivery reports and detailed message logs
  • Account management and support that understand both business and dev

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SMPP SMS Gateway API

+1,000 BUSINESSES USE SMS.to FOR THEIR needs

Why teams choose SMPP with SMS.to

Keep conversions moving

SMPP gives you persistent connections and high throughput. That means fewer drops in peak hours and faster OTP delivery. Your customers get codes when they need them Improve conversion delivery.

Get reliable routes and transparent tracking

We work with direct and high quality connections to reduce latency. You see delivery status and can act quickly when something needs attention. View routing options.

Scale without surprises

Whether you send thousands or millions, our sms message gateway handles bursts and steady flows. We guide you on throughput, windowing, and retries so your ops stay simple. Plan your scaling with us.

Technicals that help you onboard faster

We keep this buyer friendly and developer ready. If anything below needs more detail for your use case, we will confirm it with you.

Bulk SMS

Protocol and versions

We support the industry-standard SMPP protocol for high-volume messaging. If you need specific version features or bind configurations, talk to us and we’ll confirm the best setup for your workload.

SMS Marketing

Bind types and sessions

Transmitter, receiver, and transceiver binds are available for common setups. We can advise on the best session model for your target throughput.

Bulk SMS

Throughput and performance

Designed for 2,000+ MPS on supported setups. Actual rates depend on routing, content, and region. We will work with your team to set safe window sizes and enquire_link intervals.

Bulk SMS

Delivery receipts

Final and intermediate DLRs are supported to track message outcomes. We provide clear state mapping so your systems classify delivered, failed, and undeliverable messages correctly.

Bulk SMS

Character sets and long messages

GSM-7 and Unicode are supported. Concatenation with UDH is available when your text exceeds the single SMS length.

Bulk SMS

Security and access

IP whitelisting available. Credentials are created and rotated securely. GDPR aligned processing.
SSL/TLS is enforced over the SMPP connection as noted on our SMPP API page. If you need IP access controls or webhook options, we’ll confirm availability for your account during onboarding.

Bulk SMS

Monitoring and visibility

Message logs, delivery tracking, and status information help your team troubleshoot in minutes. Ask us about webhooks if you prefer push updates. For platform health updates, see our Status page.

SMPP API Gateway

Implement SMS notifications, OTP, reminders etc. into your workflow and build apps that send SMS with our reliable SSL SMPP SMS API. We can provide telecom-grade connectivity through the SMPP protocol and you can get access to our OTP and Direct SMPP Products. Leverage our direct connections with MNOs and MVNOs to ensure SMS delivery in seconds.

Quick start that respects your time

Your developers can connect in minutes. Here is the flow we usually recommend.

1Request test credentials

We provide a test account so you can bind safely. We also share helpful defaults for enquire_link and window size.

2Pick your connector

Most teams use Kannel, Jasmin, or a node-smpp client. We can share sample configs during onboarding.

3Bind and send a test

Submit a short message to a test number and confirm and receive delivery reports through SMPP deliver_sm (standard DLRs over the SMPP session)

4Tune throughput

Start with conservative windows and increase gradually. We help you pick values that avoid throttling and protect deliverability.


Go from sandbox to first DLR without friction
Need help with Kannel or Jasmin setup? Our team can review your config and suggest safe defaults.

smsto features optout compliance

Keep sign ups flowing and customers informed

Verify sign ups faster

Send OTP codes with a high throughput gateway sms api. Faster codes mean fewer drop offs and more completed sign ups.

Protect accounts and transactions

Send 2FA and banking alerts on a short message service gateway that logs delivery and supports audits. Keep a clean trail for your compliance team.

Update customers on the move

Logistics and delivery updates work best when messages arrive on time. SMPP helps you keep customers informed during busy windows.

Notify at scale without noise

Utilities, SaaS, and marketplaces can schedule maintenance and incident notices with predictable performance.

Pricing and plans that fit how you send

You can start with free credits, then move to committed volumes. Throughput tiers range from hundreds to thousands of MPS depending on your needs.

Volume discounts are available.

If you need a wholesale rate card, ask our team and we will share the current options for your regions.

Get Started

verify API

Rely on a platform trusted by global brands

Brands like Heineken, Bolt, and AB InBev trust SMS.to for messaging at scale. We back this with public reviews and a track record across multiple industries. If you want something specific, we can provide a short case that matches your use case.

What Our Users Say

SMPP vs HTTP SMS API

Global Delivery

Pick SMPP

when you need persistent connections, very high volumes, and detailed delivery states for operations and reporting.

ShortLink Tracking

Pick HTTP

when you need a fast start, basic automation, or lower volumes with simple credentials.

This is an sms platform api you can adopt in minutes.

FAQ

We focus on quality routes, clear delivery feedback, and practical onboarding for your team. You get a dependable sms gateway and support that answers promptly.

Can you help us migrate from our current sms gateway provider?Yes. We can map your current settings to our platform, help with bind changes, and run a short A/B test so you switch with confidence.

Do you support Unicode and long messages?Yes. Unicode is supported and long messages are handled through concatenation. We can show you how this appears in logs and DLRs.

Most teams run a full test in a day. Going to production depends on your internal approvals and region routing. We will guide you through safe throughput increases.

While SMPP is not encrypted by design, SMS.to secures the connection with SSL/TLS to protect data in transit.
If you need a higher security level, we can set up a dedicated VPN tunnel so your SMPP traffic moves over a private, encrypted network path. VPN availability and setup depend on your region and account. Tell us your requirements and we will confirm the best option for your team.

If you need MO and short codes or virtual numbers, tell us your regions and use case. We will confirm availability and setup steps.

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Free Credits Included

Get free Call & SMS credits when you sign up. You can request SMPP access after creating your account.

Note: Throughput, routing specifics, and MO availability can vary by region and use case. We can confirm exact values during onboarding or a quick call.

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