Step 01
Download Android app
Install the lightweight SMX app on any Android phone equipped with an active SIM card and SMS balance.
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Connect your Android device to our free SaaS dashboard to send real SMS and OTP verifications directly from your SIM card number. Pay absolutely zero gateway markup—you only pay your standard local carrier's SIM SMS costs.
1import { smxService } from "@/lib/smx-service";23const result = await smxService.sendOtp({4 receiver: "+967778994568",5 locale: "en",6 idempotencyKey: "signup_7421",7});89console.log(result.data.verificationId);SMX connects the web API to your local Android phone seamlessly, handling all device status, retry policies, and payload delivery behind the scenes.
Install the lightweight SMX app on any Android phone equipped with an active SIM card and SMS balance.
Create a free workspace in our SaaS dashboard and scan the linking QR code with the SMX app to pair your phone.
The app works in the background, foreground, even if the phone is locked or the app is killed. As long as the phone is online, messages deliver seamlessly.
Route production OTP challenges and bulk SMS using standard REST endpoints, sending directly from your SIM number.
SMX decouples heavy integration layers from physical cellular hardware. We handle the REST API orchestrations, templates, and logging, while your linked device focus on native SMS delivery.
Manage project boundaries, API keys, OTP templates, safety test numbers, and analyze real-time delivery logs in one clean dashboard.
Our ultra-efficient SMX app acts as the physical bridge, translating API requests into native telecom signals on your hardware.
Our secure real-time push protocol delivers command signals from our cloud servers to your device instantly, with absolute network safety.
Get comprehensive guides, code recipes, error mappings, and endpoint specifications to integrate in any backend within minutes.
SMX houses your configuration, templates, safety filters, and operational logging under a single, modern developer interface.
Enforce strict resend cooldowns, daily thresholds, maximum verification attempts, and custom code expiry windows.
All sensitive backend resources—including OTP challenges, Speakeasy secrets, 2FA keys, and passwords—are fully hashed at rest.
Broadcast rich notification lists, transactional notices, or batched SMS using bulk endpoint requests.
Assign static test phone numbers and pre-configured mock OTP codes to prevent active cellular costs during QA tests.
Trace delivery state, command queues, failure diagnostics, carrier signals, and live device health.
Provision scoped access credentials with one-time reveal secrets and secure API authorization headers.
Everything you need to know about setting up and running your self-hosted SMS gateway.
Stop paying exorbitant carrier markup or third-party service fees. Connect your local Android phone to our free SaaS, integrate our clean OTP API, and deliver messages immediately.