SMS API
Send transactional messages, batch notifications and template-driven SMS through a server-to-server API.
A2P SMS infrastructure for Brazil-facing businesses
Essia cloud messaging for OTP, notifications and SMS APIs.
ELASTIC ESSENCE LLC builds Essia for teams that need reliable A2P SMS delivery, verification flows and operational notifications without losing local Brazil context, API control or compliance discipline.
SMS APISingle endpoint for transactional delivery
OTPVerification flows with retry discipline
BR-readyDesigned for teams serving Brazil
Live API pattern
POST /api/v1/messages
{
"channel": "sms",
"to": "+5511900000000",
"templateKey": "otp_login",
"variables": { "code": "482193" }
}Built for product, security, support and growth teams
Fintech
Retail
SaaS
Logistics
Healthcare
What the homepage needs to prove
A local-feeling platform with developer-grade control.
The structure borrows the trust pattern from mature Brazilian B2B communication sites, then adds the developer surface a SMS API product needs.
4 flowsA2P SMS, OTP, alerts and transactional notifications
WebhookDelivery receipts and failure reasons
LGPDConsent, purpose and data handling awareness
BRLBrazil commercial readiness and local buying context
Product suite
Everything around the message, not only the send call.
Essia presents a compact product matrix for business stakeholders while keeping the API path obvious for engineers.
Verify OTP
Create login, signup and payment verification flows with resend windows, throttling and audit trails.
Notifications
Deliver order updates, logistics events, appointments, billing reminders and service incidents.
Delivery analytics
Track sent, delivered, failed and queued states with request IDs and webhook callbacks.
Templates
Reuse approved content with variables for codes, names, totals, timestamps and support links.
White label
Prepare resale or partner-led messaging offers under a controlled brand and tenant model.
Developer path
Fast enough for a prototype, explicit enough for production.
The public site shows how Essia maps to OneHub without exposing privileged credentials. Auth, contact and subscription flows go through server route handlers.
Choose a flowStart with OTP, transactional notifications or direct SMS API delivery.
Send through your serverUse server-side credentials and attach the site context header.
Listen for deliveryUse message IDs, request IDs and webhook events to reconcile status.
Tune for BrazilSegment templates, routing rules, consent state and local support workflows.
OneHub contract mapping
ONEHUB_API_URL=https://webhubs.uk ONEHUB_SITE=essia POST /api/auth/register POST /api/auth/login POST /api/contact GET /api/platform
Brazil readiness
Designed for local expectations from day one.
Brazilian enterprises need more than an endpoint. They need proof that delivery, procurement, consent and support can work in-market.
Delivery98.7%
Median API latency214 ms
Webhook success99.2%
otp_logindelivered
order_shippedqueued
payment_alertwebhook sent
Operations view
A control surface for delivery teams.
The homepage includes a dashboard-style module so buyers can picture daily work: delivery rates, volume, cost signals, failed reasons and live event streams.
Trust architecture
The homepage earns confidence before it asks for a signup.
Public statusRuntime backend health and channel discovery states.
Real formsContact and subscriber forms submit to OneHub endpoints.
Legal pagesTerms, privacy and acceptable use are visible from the footer.
Use cases
Messages that protect revenue and reduce uncertainty.
Fintech verification
Protect signup, password reset and transaction authorization with rate-limited OTP flows.
E-commerce updates
Send order confirmations, shipping events and delivery exceptions to customers in real time.
SaaS alerts
Notify admins about suspicious login, invoice issues and platform incidents.
Commercial model
Clear enough for pilots, flexible enough for enterprise rollout.
Launch
Sandbox, API keys, standard support and pay-as-you-grow SMS volume.
Scale
Higher throughput, webhook observability, template operations and onboarding support.
Enterprise
Dedicated commercial review, custom routing needs, SLA planning and partner support.
Live integration
The site is already wired to OneHub routes.
This panel exercises the backend contract safely through the website API layer and exposes loading, empty, degraded, unauthorized and rate-limit states.
FAQ
Questions a Brazil SMS API buyer will ask early.
Is this only for marketing SMS?
No. Essia focuses first on A2P transactional flows: OTP, alerts, orders, billing and customer notifications. Optional promotional consent is kept separate.
Can developers test before a sales call?
Yes. The public account flow is connected to the OpenAPI-backed auth endpoints, and the developer page shows the expected integration pattern.
Does the site expose OneHub credentials?
No. Public forms call local server routes, which then forward to OneHub and attach the site context on the server.
How does Essia approach LGPD?
The public site separates account, operational and optional marketing consent, and the security pages explain data purpose, retention and user-right handling.
Launch a Brazil-ready messaging flow with Essia.
Bring your SMS volume, OTP use case, target launch date and integration owner. Essia will map the shortest route from prototype to production.
Talk to sales
Launch a Brazil-ready messaging flow with Essia.
Bring your SMS volume, OTP use case, target launch date and integration owner. Essia will map the shortest route from prototype to production.