RESTful API
Predictable endpoints, clean JSON, and typed responses. Integrate in minutes.
Pay only for what you send.
Prepaid volume credits. No expiration or monthly fee — the more you send, the lower the SMS price. Start with R$10 free; the first top-up is R$60 (500 SMS).
Most popular
250k 250,000 – 999,999 credits
Save 38% per SMS at this volume.
R$0.075/ SMS
R$18,750.00 upfront
Buy creditsEnterprise
1M+ sends per month
Dedicated SMPP, priority routing and custom pricing for high volume.
Custom quote
SMPP · API · Dedicated support
Talk to salesReceive a real SMS now.
Enter your Brazilian mobile number and watch delivery in real time. Limited to one send per number per day.
Integrate in minutes, not sprints
A predictable REST API and official typed SDKs for Node, Python, Go, and PHP — with no third-party dependencies. Authentication is handled for you: copy, paste, and send. No SDK for your stack? REST works everywhere.
import { SMSGo } from "@orynlabs/smsgo"; const smsgo = new SMSGo({ apiKey: process.env.SMSGO_KEY }); const sms = await smsgo.send({ phone: "+5511999990000", message: "Your code is 184502",}); console.log(sms.id, sms.status); // "a1b2c3…" "queued"Built by engineers, for engineers.
We are building the messaging platform we always wanted to use — one that simply works.
keytest_… (SMSGo-key)test
POST/v1/sms/send/single2xx
hooksms.status · test:truetest
balanceno chargetest
Test mode
Validate end to end with a test_ — key — the same endpoints and production-equivalent responses. Nothing is charged or actually sent: delivery is simulated and your webhooks fire with test: true.
Learn moreeventsms.status
urlhttps://app.seudominio.com.br/hooks
idmsg_3aF9
statusdelivered
Modular webhooks
Subscribe to every status change and receive HMAC-SHA256 signed payloads in your API, with exponential-backoff retries.
Learn moreFrom signup to your first SMS in under 5 minutes.
01
Create your account
Sign up in seconds and get R$10 in free credit — no credit card required.
02
Get your SMSGo-key
Copy the key from Account → API in the dashboard and paste it into your backend.
03
Send and track
Make one POST request and track each SMS from queue to delivery through the API or webhooks.
Everything between a sent SMS
and an SMS that converts.
Complete messaging infrastructure exposed through a clean, predictable API.
Real-time delivery
Track every SMS: queued, sending, delivered, or failed — through the API or webhooks.
OTP & authentication
One-time codes with priority routing and ready-to-use templates.
Lists and contacts
Import, segment, and send to entire lists with per-contact personalization.
Scheduling
Schedule campaigns and reminders for the right time — Brazilian time zones included.
LGPD compliance
Automatic opt-out and an auditable consent trail.
Visibility into every send.
Track delivery, latency, and failures in real time — without leaving the dashboard.
MESSAGES · DASHBOARD (DEMO)
0
delivered queued
May 31Jun 7Jun 14Jun 21Jun 27
SMS starts the conversation.
WhatsApp keeps it going.
Send an affordable SMS that arrives without an installed app, then bring the customer back to WhatsApp for free with a WhatsApp link.
SMS
arrives without an installed app
WhatsApp
brings customers to WhatsApp
free
when they reply
Proof, not promises.
No borrowed logos. Trust comes from the code.
Open-source SDK
@orynlabs/smsgo on GitHub and npm. MIT licensed, typed, zero dependencies.
Signed webhooks
Every payload includes an HMAC-SHA256 signature in X-SMSGo-Signature. Verify the source before trusting it — examples included in the docs.
Stable errors
insufficient_balance, rate_limited, validation_error. Versioned enums with the correct HTTP status.
Two-step auth
SMSGo-key → token Bearer valid for 48 hours and cached by the SDK. Less exposure for your API key.
Before you integrate.
Minutes. Create an account, get a
Bearer token, and call POST /v1/sms/send/single. You receive free test credits, with no card required.Every message moves through
queued, sending, delivered, or failed. Query the API or receive each transition by webhook.Yes. One-time codes receive priority routing and ready-to-use templates.
Yes. Automatic opt-out, managed blocklists, and auditable logs provide compliance by default.
You buy prepaid credits with no monthly fee, and they never expire.
Official SDKs are available for Node.js, Python, Go, and PHP, with no third-party dependencies. The REST API works with any stack.
Every request includes
X-SMSGo-Signature. Recalculate the HMAC-SHA256 with your secret before trusting the payload.