Transform Your Android Intoa Powerful SMS Gateway
Turn any Android phone into an SMS server. API, webhooks, multi-device routing, and campaigns—priced by connected devices and send volume. You use your own phone and operator SMS credit.
SMS Gateway Features for Your Business
Every feature on this page runs on the same foundation: an Android phone with your SIM in it, driven by a REST API. Bulk campaigns, transactional alerts, inbound replies, and device automation all share one queue and one set of credentials, so you are not stitching together separate tools as your messaging grows.
The difference from an aggregator is where the cost sits. You pay your operator for the messages you send, and the service fee follows device count and SMS volume rather than a per-message rate. Everything is reachable through the REST SMS API with examples in PHP and C#.
Complete SMS Gateway Features Overview
- Bulk messaging that scales throughput as you add connected devices (within plan caps)
- Full MMS support for rich media messaging with images and attachments
- USSD integration for accessing carrier services and mobile banking
- Multi-device architecture for failover and capacity on multi-device plans
- Billing by devices and SMS send volume—not a turnkey airtime reseller stack
Built for teams that outgrow a single phone
Multi-device routing is what makes the model practical at volume. Connect additional Android phones and SIMs, and the queue spreads across them: throughput rises, one dead battery stops being an outage, and time-critical traffic such as login codes can be pinned to a device that never carries a marketing queue.
Around that core sit the pieces most messaging programmes need eventually — USSD checks against your own SIMs, two-way conversations on the number you sent from, scheduled campaigns, and webhooks that push events into your backend as they happen. The use case pages show how these combine in practice.
For developers, we publish full API docs, HTTPS/JSON samples in major languages, and webhooks that plug into modern backends. We follow REST conventions. You do not need a proprietary package SDK to ship an integration.
Every feature, explained in detail
Each page below covers one capability properly: what it does, the limits worth knowing, how to call it from the API, and the regional differences that change the answer. Start with whichever problem you are solving this week.
Turn Android into SMS Gateway
Turn any Android phone into an SMS server. Send on your own SIM using your operator plan.
- Use existing mobile plan
- No rented numbers or aggregator markup
- Add devices to raise send capacity
- Works with any Android device
- Background operation support
Developer-First REST API
Simple HTTP API that works with languages that can call HTTPS. Examples and docs help you integrate quickly.
- HTTPS REST samples
- Multiple language examples
- Webhook callbacks
- Developer documentation
Multi-Device & SIM Support
On multi-device plans, connect several Android phones and SIMs you control. Raise capacity and add failover within plan caps.
- Plan-capped multi-device
- Route across handsets
- Failover when a device drops
- Your operator SIMs
- Measure real throughput
Core SMS Features
Messaging features for bulk sends, two-way inbox, devices, and automation
Spintax Personalization
Send bulk messages that are personal. Use CSV or Excel files. Use column headers as variables. Each message is unique.
Use your spreadsheet columns to customize messages. Works with xlsx, xls, ods, and csv files. Easy variable substitution.
MMS with Attachments
Send MMS with pictures and files. Use our API or website. Full media support included.
Full MMS support. Works with images. Check if your carrier supports it in your country. Works with many image formats.
USSD Integration
Send USSD requests. Get responses. Use our website or API. Webhooks supported. Schedule them too.
Needs Android 8.0 or newer. Schedule USSD requests. Read responses via API or webhooks. Check balances and more.
Two-Way Messaging
Send and receive SMS at the same time. Your phone becomes an SMS hub. Auto-reply works too.
Two-way messaging. Handle incoming and outgoing messages. All in one place. Set up keyword auto-replies. MMS supported.
Advanced Capabilities
Check out all our features organized by category
RESTful API
Simple HTTP API with JSON responses. Works with PHP, Python, Node.js, Java, C#, and all major programming languages.
Event Webhooks
HTTP callbacks for delivery reports, inbound messages, and system events. Latency depends on device, carrier DLR paths, and your endpoint; retries depend on endpoint availability.
Code samples
Copy-ready HTTPS/JSON samples for major languages. Full REST docs and tutorials—formal multi-language package SDKs are not required to integrate.
API Security
Multiple API tokens with permission controls. Rate limiting and IP whitelisting for better security.
Industry Solutions
Tailored SMS solutions for different industries with specific compliance and feature requirements
Healthcare
Appointment reminders and operational alerts on your own SIMs. Keep PHI out of SMS bodies — covered entities remain responsible for HIPAA.
- Appointment Reminders
- No PHI in SMS bodies
- Secure Messaging Practices
- Emergency Ops Alerts
E-commerce
Order confirmations, shipping updates, and promotional campaigns with spintax personalization.
- Order Updates
- Spintax Personalization
- Abandoned Cart Recovery
- Promotional Campaigns
Fintech
OTP delivery, transaction alerts, and account notifications through your own SIMs — latency depends on the device and operator path.
- Fast OTP on local SIMs
- Transaction Alerts
- Account Security
- Fraud Alerts (you own content)
Enterprise
Multi-device fleets, API integration, and control-plane hardening (HTTPS, scoped tokens, audit trail). Custom branding only when contracted.
- Multi-device fleets
- API + webhooks
- Plan-based scale
- Custom work on request
Additional Features
More powerful tools to improve your SMS gateway experience
Auto Responder
Set up keyword-based automatic replies with MMS support and webhook integration for custom responses.
Email Integration
Forward SMS to email, convert emails to SMS, and manage communications across multiple channels.
Smart Routing
Smart message routing across devices and SIMs. Auto failover. Load balancing included.
Analytics Dashboard
See delivery reports and account stats in the panel. Status updates when the handset and carrier report them—not a guaranteed wall-clock real-time feed.
Template Management
Create reusable message templates with variable substitution and spintax support for personalization.
Built-in Documentation
Access user guides, API documentation, and tutorials directly from the application interface.
Background operation
Run the Android gateway app continuously as a background process with auto-start so the device stays ready after reboot—still requires power, radio, and a healthy SIM.
Auto Start
Automatically start the SMS Gateway application on device boot/restart for uninterrupted service availability.
Frequently Asked Questions
Everything you need to know about our SMS Gateway features
What SMS gateway features are included for free?
Free plan includes 300 SMS total, 300 contacts, and 1 device maximum to test functionality. Demo sends append a footer with www.sms-gateway.app. API access, webhooks, and basic history are included. Higher volume and multi-device capacity start on paid plans. See our SMS gateway pricing for device, SMS, and contact caps.
Can I send MMS messages with the gateway?
Yes when your handset and operator support MMS for that path. Attach images/files via API or portal; delivery depends on carrier MMS support, not unlimited cloud media credits.
How does multi-device support work?
On plans that allow multiple devices, connect several Android phones and route sends across them for capacity and failover. Device count is plan-capped (see pricing). You still pay operator airtime on each SIM.
Is there a limit on message volume?
Yes. Platform plans meter total SMS sent through the gateway plus device count. Your mobile operator also enforces fair-use and airtime. Handset throughput is bounded by radio and OEM rate ceilings.
Can I resell SMS or white-label the product?
You can integrate our API into your apps. We do not ship a turnkey multi-tenant reseller SaaS with per-tenant airtime billing. Reselling SMS/airtime may violate carrier terms. White-label branding is custom work when contracted on higher-volume plans.
What is USSD integration?
Send USSD codes like *123# and read responses where the handset and operator allow it—balance checks, some carrier menus. Requirements vary by device OS and network.
How secure is the platform?
We harden the control plane with 2FA, scoped API tokens, session management, and HTTPS. Honest certification status (including SOC 2 roadmap) lives on the Security & Trust Center. Covered entities must keep PHI out of SMS bodies.
Multi-Device Operations
Queue, route, and watch real Android handsets—without inventing AI claims you cannot ship
Device online status
See which phones are connected, sending, or offline so you know where capacity is before you fire a campaign
Multi-device routing
Send through a chosen device or distribute across SIMs you control. You set rules; carrier delivery still depends on each operator path.
Delivery reports & history
Track send status, DLR when available, and per-device history so operators can spot slow handsets or empty airtime
Operational alerts
Get notified when a device disconnects, a queue backs up, or API keys need attention—so failures are not silent
Retries & queue recovery
Failed API submissions can re-queue with backoff where configured. Radio and carrier failures still surface honest error states.
Always-on device habits
Tutorials cover charging, OEM battery exceptions, and screen/network keep-alive apps so handsets stay connected overnight
Developer building blocks
REST API, webhooks, and docs you can wire into your stack—without fake sandbox product theatre
REST API & samples
Send, list, and manage messages over HTTPS with API keys. Docs and samples cover common stacks so you can integrate quickly.
- HTTPS REST
- API keys
- Code samples
- Developer Center
Status & webhooks
Track accepted vs failed submits and push delivery events to your servers when configured—so ops is in your systems, not only our UI.
- Webhook callbacks
- Delivery statuses
- Error payloads
- Retryable events
Test before bulk
Validate one phone and SIM with a small send first. Measure real DLR and latency before you put production traffic on a handset.
- Single-device tests
- Real SIM path
- Throughput checks
- Operator limits
Workflow integrations
Hook OTP, alerts, and two-way bots from your app or CRM using HTTP. Keyword auto-reply and queues live in the gateway path you control.
- HTTP triggers
- Keyword reply
- Queue control
- CRM / bot hooks
Automation that ships
Rules, schedules, and reports on your devices—not machine-learning marketing fiction
Device & SIM selection
Pick which connected Android device (and SIM when multi-SIM) handles a send. Scale capacity by adding phones you own—not by rented cloud SIMs.
- Explicit device pick
- Multi-SIM support
- Parallel handsets
- Your operator SIMs
Scheduled sends
Queue campaigns for a clock time in your account timezone. You choose windows; we do not claim behavioral AI peak-time prediction.
- Timed campaigns
- Timezone you set
- Queue drain control
- Bulk with pacing
Usage & delivery analytics
Volume by device, accepted vs failed submits, and webhook outcomes so you can size plans by real traffic—not predicted ROI.
- Per-device counts
- Failure visibility
- Exportable history
- Plan sizing input
SMS Gateway Features FAQ
Common questions about our platform capabilities and features
What SMS gateway features are included for free?
Can I send MMS messages with the gateway?
How does multi-device support work?
Is there a limit on message volume?
Can I resell SMS or white-label the product?
What is USSD integration?
How secure is the platform?
Key Takeaways
- Turn any Android device into an SMS gateway using your SIM and operator credit
- Developer REST API with samples for PHP, Python, Node.js, Java, C#, and more
- Multi-device routing within plan caps for capacity and failover
- Two-way messaging, USSD (where supported), MMS, and webhooks
- Control-plane hardening with honest certification status on /security
- Free plan: 300 SMS total, 300 contacts, 1 device max; demo footer www.sms-gateway.app
Explore More About SMS Gateway
Bulk SMS from Excel & CSV
Upload a spreadsheet, map columns to merge tags, and personalise every message
learn more02Two-Way SMS
Replies come back to the SIM that sent the message and reach your app by webhook
learn more03Dual SIM & Multi-Device Routing
Route SMS across SIMs and phones for throughput, operator matching, and failover
learn moreReady to Transform Your Android?
Download our free SMS Gateway app and start building powerful SMS solutions today.