Send notifications, alerts, reminders, and two-way conversations with a single API. Direct carrier connections for delivery; built-in tooling for opt-in, opt-out, and US A2P 10DLC compliance.
Reliable delivery with enterprise-grade infrastructure
Long messages, Unicode, and rich media (MMS) where supported. Direct carrier routes with delivery receipts so you always know what was delivered.
For high-volume, brand-led campaigns. We help with carrier vetting and provisioning — plan ahead, as US short-code provisioning typically takes 8–12 weeks.
US and Canada toll-free numbers for high-volume business messaging, with TFN (toll-free number) verification handled for you — required by carriers since 2023.
Local long codes in supported countries — registered for US A2P 10DLC. Send and receive messages using our simple REST API or client libraries.
curl -X POST https://api.worldatlantus.com/v1/messages \
-H "Authorization: Bearer YOUR_API_KEY" \
-d to="+1234567890" \
-d from="+1987654321" \
-d body="Hello from WorldAtlantus!" Our RESTful API makes it simple to send and receive messages from any application. Get started with comprehensive documentation, code examples, sandbox numbers, and client libraries for popular programming languages.
Enterprise features that ensure reliable delivery and compliance
We handle A2P 10DLC brand registration, campaign vetting, and trust scoring with The Campaign Registry so your local-number traffic is carrier-compliant.
CTIA, TCPA, and GDPR posture documented, with a DPA available on request to support your own compliance program.
Automatic STOP/HELP keyword handling, with easy custom opt-out flows so every campaign respects recipient consent.
Combine voice and messaging capabilities on the same platform. Unified API for all communication channels with consistent authentication and billing.
Enable real-time conversations with inbound message webhooks. Build interactive experiences, support chatbots, and handle customer replies programmatically.
Per-message attempts, delivery receipts, error reasons, and rolling deliverability dashboards with exportable reports.
Typical lead times so you can schedule your launch
US A2P 10DLC brand verification typically completes in 1–3 business days.
Campaign approval takes 1–7 business days depending on the use case.
Toll-free SMS verification typically completes in 2–5 business days.
Short-code provisioning takes 8–12 weeks — the industry standard.
Join thousands of developers building amazing messaging experiences with our APIs. Start sending messages in minutes with our simple, powerful platform.
Get an API Key