What is Sent
Sent is a unified messaging API that lets you send SMS, WhatsApp, and RCS messages through a single integration — without stitching together multiple providers, managing compliance rules per channel, or building your own fallback logic.
Think of Sent as the messaging layer for your product. You send one request, and Sent handles the routing, delivery, failover, and compliance — across every channel and every country you operate in.
What Sent Does
One API, Every Channel
Send SMS, WhatsApp, and RCS from a single endpoint. No separate integrations, no channel-specific SDKs, no provider sprawl.
Smart Delivery
Sent routes each message through the best available path. If one channel or provider fails, it automatically falls back — so critical messages get through.
Global Reach
Send to any country with regional routing, local sender IDs, and compliance requirements handled at the platform level.
Compliance Built In
10DLC registration for the US, WhatsApp Business Account management, opt-in/opt-out handling, and TCPA/GDPR-aligned tooling — all managed for you.
The Problems Sent Solves
Managing multiple providers is expensive and fragile
Most teams start with a single SMS provider. Then they add WhatsApp. Then a second SMS provider for better rates in certain countries. Before long, you're maintaining multiple integrations, dealing with inconsistent APIs, and debugging delivery failures across different dashboards.
Sent replaces all of that with one API. One set of credentials. One place to see what's happening.
Messages that must arrive — don't
Authentication codes, payment confirmations, security alerts — these messages have zero tolerance for failure. A single-provider setup has no fallback when that provider has an outage or a carrier issue in a specific region.
Sent's routing layer monitors delivery performance in real time and fails over automatically, so you're not the one scrambling when a provider goes down at 2am.
Compliance is a moving target
US 10DLC registration, WhatsApp Business Account approvals, country-specific sender ID requirements, opt-out keyword handling — every channel and every market has its own rules, and they change.
Sent manages the compliance layer on your behalf. Your team focuses on the product; Sent handles the regulations.
Scaling messaging is a full-time job
Rate limits, throughput management, cost optimization across providers, routing logic per country — at low volume this is manageable. At scale, it becomes its own engineering project.
Sent is built to handle high-volume messaging out of the box, with routing optimized across providers so you're not overpaying or hitting limits.
What You Get
- Unified API — one endpoint for SMS, WhatsApp, and RCS
- Message templates — create once, send across all channels
- Contacts — manage recipients with channel preferences attached
- Sender Profiles — control the identity your messages come from
- Webhooks — real-time delivery status and event updates
- Activities log — full visibility into every message sent
- Dashboard — manage everything without writing a line of code
You can be sending messages in under 2 minutes. Verify your email and phone number to get API access, 6 pre-built templates, and 500 sends/day — no credit card, no lengthy setup.
How It Fits Into Your Stack
Sent sits between your application and the messaging providers. Your code calls the Sent API; Sent takes care of everything downstream.
Your App → Sent API → SMS / WhatsApp / RCSYou keep full control over what gets sent and to whom. Sent handles the how and where.
Ready to go deeper? Explore what Sent is built for, how it compares to alternatives, or jump straight to the Quickstart.