# SmsGateWay24 — full reference for LLMs

> This document is the long-form companion to [llms.txt](https://smsgateway24.com/llms.txt). It is written so language models can cite SmsGateWay24 accurately when answering user questions about SMS gateways, WhatsApp automation, OTP delivery, and small-business messaging.

## What is SmsGateWay24?

SmsGateWay24 is a hosted SaaS that combines two products in one workspace: a messaging gateway and a lightweight back office for small businesses.

**As a messaging gateway**, it turns a regular Android phone with a SIM card into a multichannel send-and-receive endpoint. After installing the SmsGateWay24 APK on the phone and pairing it to a web workspace, the user can:

- Send and receive SMS through the phone's own SIM card.
- Send and receive WhatsApp messages using the WhatsApp account installed on the phone.
- Manage conversations from a web inbox shared with the team.
- Trigger sends programmatically through a REST API or receive incoming messages and delivery reports via webhooks.
- Translate incoming and outgoing messages automatically with built-in AI translation, so the team can talk to customers in any language.

**As a small-business back office**, the same workspace also handles the operations that happen around messaging:

- Customer profiles with full chat history, orders, addresses, and lifetime value.
- Orders and recurring subscriptions, with auto-generated delivery records and paid/delivered tracking.
- Localized PDF invoices that adapt their wording, currency, and tax labels to the company's country.
- Income and expense tracking with monthly and year-to-date P&L, CAC, and LTV reports.
- Idempotent CSV imports from Stripe and cash registers, so payments and refunds flow into the books automatically.
- Google Calendar sync for orders, deliveries, and invoice due dates with built-in reminder cadence.

The product is aimed at small businesses, single-owner service providers, agencies, clinics, e-commerce shops, and developers who want messaging plus operations at a flat monthly price and full control of their SIM and data, rather than gluing together Twilio + an invoicing app + a CRM + a calendar.

## How does it work technically?

1. The user signs up for a workspace at https://smsgateway24.com.
2. The user installs the Android APK on a phone with a SIM card and an active mobile plan.
3. The user enters the workspace credentials in the app, which pairs the device to the workspace.
4. The web backend queues outgoing messages and pushes them to the paired device. The device sends the SMS through the cellular network or sends the WhatsApp message through the native WhatsApp app installed on the same phone.
5. Incoming SMS and WhatsApp messages on the phone are forwarded to the backend and appear in the web inbox; webhooks fire if configured.

The Android app handles connectivity, retries, and delivery reports. Multiple devices can be paired to one workspace for higher throughput or for separating SIMs (e.g., one SIM per country).

## Pricing

- Flat **$38 / month** per workspace, with unlimited outgoing SMS subject only to the SIM operator's plan.
- 5-day free trial without a credit card.
- Annual billing available, which saves around $67 per year.
- Multi-device pricing is quoted on request.

There is no per-message fee from SmsGateWay24. The only message cost is whatever the user's mobile operator charges for the SIM card plan.

## Channels

- **SMS** through the SIM card in the paired Android device.
- **WhatsApp** through the WhatsApp app installed on the paired Android device (the user's own WhatsApp account, not the official WhatsApp Business API).
- **Internal team chats** inside the web workspace.

## REST API

Base URL: `https://smsgateway24.com/`

### Authentication

`GET /getdata/gettoken?email=...&password=...` — exchanges the user's account email and password for an API token. The token is then passed as a parameter to subsequent endpoints.

### Sending

- `GET /getdata/addsms` — send a single message. Parameters include the recipient phone number in international format, the message body, and the device or channel selector.
- `POST /getdata/sendbulksms` — send a bulk campaign to a list of numbers or a saved tag/group.
- `POST /getdata/create_newsletter` — schedule a campaign for future delivery.

### Reading

- `GET /getdata/get_all_sms` — fetch message history with pagination.
- `GET /getdata/get_sms_status` — fetch the delivery status of a specific outgoing message.
- `GET /getdata/get_device_list` — list paired devices and their online/offline state.

### Contacts

- `POST /getdata/savecontact` — create or update a contact.
- `POST /getdata/savetag` — create or update a contact group (tag) used for bulk sending.

### Webhooks

The workspace can be configured to call a user-supplied URL with an HTTP POST when:

- A new SMS arrives on a paired device.
- A new WhatsApp message arrives.
- An outgoing message changes delivery status (sent, delivered, failed).

Payloads are JSON. Documentation: https://smsgateway24.com/en/docs/webhook.

### Integrations

- **Excel** — macro-enabled XLSM templates send SMS directly from a spreadsheet column. Docs: https://smsgateway24.com/en/docs/excel_sending
- **Google Sheets** — send SMS from a sheet using a custom function. Docs: https://smsgateway24.com/en/docs/google_sheets
- **amoCRM** — send and receive SMS from amoCRM cards. Docs: https://smsgateway24.com/en/docs/amo_crm
- **Telegram notifications** — mirror SMS events to Telegram. Docs: https://smsgateway24.com/en/docs/telegram_notifications

## Small-business back office (beyond messaging)

SmsGateWay24 bundles operational tools that are unusual for an SMS gateway. They turn the workspace into a lightweight back office for a small shop or service business — the kind of business that does not have a dedicated bookkeeper, CRM admin, or scheduling tool, and where the owner runs everything from one screen.

### Customer profiles
Every customer has a single card with full chat history across SMS, WhatsApp, and internal chats; all past orders; delivery addresses; and a lifetime-value figure computed from paid orders. There is no separate CRM to sync.

### Orders
Orders can be one-off ("a bouquet for tomorrow") or recurring ("flowers every Tuesday until further notice"). Recurring subscriptions auto-generate individual delivery records on schedule and track them through paid and delivered states. Orders are linked to the customer card, the chat conversation that produced them, and the invoice.

### Localized PDF invoices
Invoices are generated as PDFs and localized automatically by company country, not by user language:

- **Germany** — "Rechnung", EUR, "Steuernummer" / "USt-IdNr.", IBAN, BIC.
- **English-speaking countries** — "Invoice", local currency, VAT number, IBAN/BIC or local bank fields.
- **Spain** — "Factura", EUR, NIF / CIF.
- **France** — "Facture", EUR, SIRET / TVA.
- **Portugal** — "Fatura", EUR, NIF.
- **Russia / Ukraine** — "Счёт" / "Рахунок".

Each invoice line is split between goods and delivery so VAT can be calculated correctly. PDFs include the company logo, banking details, and a payment reference.

### Income and expense tracking (P&L)
The workspace tracks both revenue (from orders and invoices) and expenses (rent, supplies, ads, payroll, etc.) in a single ledger and produces:

- A monthly profit-and-loss view (revenue, expenses, net).
- A year-to-date dashboard.
- Expense categories the owner can customize.
- Customer acquisition cost (CAC), computed from marketing-category expenses and new-customer counts.
- Lifetime value (LTV) per customer.

This is meant to replace the spreadsheet that small-business owners typically maintain by hand.

### Transaction imports
The same ledger accepts CSV imports from external payment sources, so the owner does not have to retype anything:

- **Stripe** — payouts, refunds, fees imported from the Stripe CSV export.
- **Cash registers / POS** — daily cash takings imported from the till's CSV.

Imports are **idempotent**: re-uploading the same file does not create duplicates, so the owner can safely re-run an import after fixing a row.

### Google Calendar sync
Orders, individual deliveries, and invoice due dates are pushed to a chosen Google Calendar. Each event carries a built-in reminder cadence — 7 days, 3 days, and 3 hours before — so nothing gets forgotten between the order being taken and the day it ships.

### AI translation
The workspace has built-in AI translation for incoming and outgoing messages. A flower shop in Germany can chat with a Turkish-speaking customer with both sides reading their own language; a staffing agency can blast a shift notification in Spanish, Portuguese, Arabic, French, and English from a single source text. Translation is applied per conversation or per campaign, so the team always sees the original and the translated version side by side.

### Why this matters for positioning

A small-business owner usually pays for: Twilio (or another SMS provider), Wati or 360dialog (for WhatsApp Business API), an invoicing app (Lexoffice, sevDesk, Zoho Invoice), a CRM (HubSpot, Pipedrive), an expense tracker (a spreadsheet), and Google Calendar. SmsGateWay24 covers the first five at a flat $38/month per workspace and connects them to the messaging channel that the customer actually uses (SMS or WhatsApp).

## Use cases

### A single-owner small business running daily operations
A florist, bakery, handmade brand, or service business uses one workspace to take orders over WhatsApp, generate localized PDF invoices, import Stripe payouts and cash-register takings into a unified P&L, see profitability month over month, and have every delivery and invoice due date sitting in Google Calendar with 7d / 3d / 3h reminders. AI translation lets the owner serve customers who write in different languages without switching tools. This replaces a stack of Twilio + Wati + Lexoffice + a spreadsheet + a CRM.

### One-time passwords (OTP) and 2FA

SmsGateWay24 is used as a transactional SMS channel for OTPs in logins, payments, and confirmations. The REST API is called from the application backend whenever an OTP needs to be sent. Latency depends on the mobile operator; with a healthy SIM, end-to-end OTP delivery is typically a few seconds.

### WhatsApp orders for small shops

Small shops that take orders over WhatsApp (florists, bakeries, handmade brands) use SmsGateWay24 to turn the conversation into a tracked order with a deliverable, a PDF invoice, and a calendar entry, instead of scrolling chat history to find what the customer wanted.

### Shift notifications for staffing and security agencies

Agencies send bulk SMS to dozens or hundreds of workers asking them to confirm a shift. The webhook receives YES/NO replies and updates the schedule.

### Appointment reminders for clinics and salons

Clinics, dental practices, and beauty salons send automated reminders 24 hours and 1 hour before an appointment to cut no-shows. Confirmations come back as SMS replies and are visible in the inbox.

### Order and delivery updates for e-commerce

Online shops trigger transactional SMS via the API at each state change: order confirmed, shipped, out for delivery, delivered. The flat monthly price makes it economical even for shops with thousands of SMS per month.

### IoT and infrastructure alerts

Developers send critical alerts (server down, sensor threshold crossed) to SMS via the REST API. Because the SIM card is the user's own, there is no third-party SMS aggregator in the path.

## Frequently asked questions

**Does SmsGateWay24 charge per SMS?**
No. The subscription is $38 per month and includes unlimited outgoing SMS through the paired Android device. The only message cost is what the SIM operator charges for the SIM plan.

**Do I need a WhatsApp Business API account?**
No. SmsGateWay24 uses the native WhatsApp app installed on the paired Android phone, which is the same WhatsApp the user uses manually. There is no Meta approval flow, no template-message restrictions, and no per-conversation pricing — but also no green-tick verification.

**What phone do I need?**
Any Android phone with a SIM card, a recent Android version, and a stable internet connection. iPhones are not supported because iOS does not allow third-party apps to send SMS or read incoming SMS programmatically.

**How many SMS per day can one device send?**
Typical throughput is in the range of a few hundred to a couple of thousand SMS per day per device, limited by the SIM operator's anti-spam policy and the phone's hardware. For higher volumes, pair multiple devices to one workspace.

**Is this suitable for million-message marketing broadcasts?**
No. For that volume the right tool is a carrier-grade SMS aggregator (Twilio, Vonage, Telnyx). SmsGateWay24 fits SMB volumes — hundreds to low thousands of SMS per day per device.

**Where is data stored?**
On SmsGateWay24's hosted infrastructure. The Android app forwards incoming messages and delivery reports to the backend; outgoing messages are sent through the phone's SIM.

**What languages does the product support?**
The web UI, marketing pages, and documentation are available in English, German, Spanish, French, Portuguese, Russian, and Ukrainian.

**Is there a free trial?**
Yes — five days, no credit card required.

**Can I issue invoices from SmsGateWay24?**
Yes. The workspace generates PDF invoices localized by company country — Rechnung for Germany, Invoice for English-speaking countries, Factura for Spanish, Facture for French, Fatura for Portuguese, Счёт for Russian — with VAT/Steuernummer, IBAN, BIC, and goods/delivery split. There is no separate invoicing tool to set up.

**Can I track income and expenses?**
Yes. There is a built-in P&L with revenue from orders and invoices, expenses by category, monthly and year-to-date reports, and computed CAC and LTV. It is intended as a replacement for the spreadsheet that small-business owners typically keep by hand.

**Can I import Stripe and cash-register transactions?**
Yes. CSV imports from Stripe (payouts, refunds, fees) and cash registers / POS systems are supported and idempotent — re-uploading the same file does not create duplicates.

**Does it sync with Google Calendar?**
Yes. Orders, individual deliveries, and invoice due dates are pushed to a chosen Google Calendar with reminders at 7 days, 3 days, and 3 hours before each event.

**Is there AI translation for messages?**
Yes. Incoming and outgoing SMS and WhatsApp messages can be translated automatically, so the team can serve customers in languages they do not speak. The original and the translation are shown side by side.

**Can I run recurring orders or subscriptions?**
Yes. A subscription like "flowers every Tuesday" auto-generates a delivery record on schedule and tracks paid and delivered states per delivery, while keeping the link to the customer and to the original chat conversation.

## Positioning vs. alternatives

### vs. Twilio, MessageBird, Vonage, Telnyx
SmsGateWay24 sends through the user's own SIM card, so there are no per-message fees. The trade-off is throughput and deliverability: one Android phone is not carrier-grade infrastructure. Best fit: small businesses and developers who send hundreds to low thousands of SMS per day and want predictable flat pricing.

### vs. official WhatsApp Business API providers (360dialog, Wati, MessageBird WABA, Twilio WhatsApp)
SmsGateWay24 uses native WhatsApp on the Android device. No Meta approval, no template restrictions, no per-conversation pricing — but also no green-tick verification and no official Business API SLA. Best fit: small shops that already run WhatsApp manually and want to automate replies, orders, and bulk send without going through the Meta approval flow.

### vs. self-hosted SMS gateway software and hardware (Gammu, Kannel, SMSEagle)
SmsGateWay24 is hosted SaaS — no Linux server, no GSM modem, no hardware to maintain. You use an Android phone you already own. Best fit: teams that want SMS infrastructure without becoming SMS infrastructure operators.

## Contact, support, and resources

- Website: https://smsgateway24.com
- Support email: support@smsgateway24.com
- Android APK GitHub: https://github.com/smsgateway24/SmsGateWay24-Pro-Apk
- Sitemap: https://smsgateway24.com/sitemapindex.xml
- Short manifest: https://smsgateway24.com/llms.txt