Rich messaging on the world's most popular platform.
98.0%
Read Rate
45.0%
Engagement
<1.5s
Response Time
5M+
Active Sessions
SMSLY WhatsApp API utilizes Meta's Cloud API and enterprise hosting infrastructure. Outbound message requests are validated, formatted into Meta-compliant JSON payloads, and dispatched via low-latency HTTP/2 endpoints. Inbound messages and receipt webhooks are handled by a distributed receiver cluster, which normalizes the payloads and delivers them to your application in under 300ms, enabling real-time conversational experiences.
WhatsApp enforces strict 24-hour customer service windows. SMSLY maintains a stateful session tracker that monitors user interaction events. When a user sends an inbound message, the system registers an open session window. If an agent tries to send a free-form message outside this window, SMSLY automatically alerts the application or converts the message into an approved template format to prevent delivery rejection.
Not all customers are active on WhatsApp at any given moment. SMSLY allows you to set intelligent retry paths. If a critical WhatsApp notification does not receive a "delivered" status within 2 minutes, SMSLY's orchestration engine automatically falls back, sending the message as a standard SMS or an RCS message. This ensures guaranteed delivery of time-sensitive alerts.
WhatsApp Business accounts require pre-approved message templates for outbound notifications. SMSLY integrates directly with Meta's template management suite, allowing developers to create, submit, and manage templates directly from the SMSLY API or dashboard. The platform monitors template quality ratings (High, Medium, Low) in real-time, auto-pausing degraded templates to safeguard your sender reputation.
Engage customers with rich media, quick-reply buttons, interactive list messages, and single/multi-product menus. SMSLY simplifies the complexities of WhatsApp catalog integration, enabling enterprises to build end-to-end shopping and support flows that drive up to 45% engagement and significantly lower customer acquisition costs compared to email or web forms.
Every feature designed for reliability at scale. No compromises.
Guide through Meta verification to display the official green check badge on your profile.
Build pre-approved templates with quick reply buttons, call-to-action links, and media placeholders.
Send and receive high-definition images, videos, audio, PDF documents, and location payloads.
Send product catalogs, interactive lists, and single/multi-product messages to enable in-chat shopping.
Create automatic conversational menus and agent hand-offs with comprehensive webhook support.
Automatic template monitoring and session window alerts to ensure compliance with WhatsApp policies.
Automatically fetch user profile names and contact details during initial contact events.
Scalable template delivery capable of sending thousands of customer notifications per minute.
Maintain WhatsApp's default security with full support for encrypted media and secure messaging.
In-depth tracking of message read rates, button clicks, and session metrics directly from the dashboard.
Drop-in SDKs for every major language. One API call to get started.
Handle support conversations in WhatsApp with rich media, quick replies, and seamless agent handoff.
Send order confirmations, shipping updates, and delivery notifications with images and tracking links.
Let customers book, reschedule, and confirm appointments directly through WhatsApp interactive messages.
Share product catalogs with images, descriptions, and pricing — customers browse and order without leaving the chat.
Send invoice links and payment reminders with one-tap pay buttons for faster collection cycles.
Register your business and phone number through the SMSLY dashboard. We handle the Meta Business verification process.
Design message templates for your use cases. Templates go through WhatsApp approval — most are approved within hours.
Send template messages to opted-in customers or respond to incoming conversations within the 24-hour session window.
Use webhooks to receive incoming messages, route them to agents or bots, and respond in real-time.
SOC 2 Compliant
Audited annually
Encryption at Rest
AES-256
99.95% Uptime SLA
Guaranteed
Multi-Region
3 regions active
Build a complete messaging stack with products designed to work together.
Start with our free tier — no credit card required. Scale to millions of messages with enterprise support, custom SLAs, and dedicated infrastructure.
Free tier includes 1,000 emails/month. No credit card required. Enterprise plans include dedicated IPs, custom SLAs, and 24/7 support.