The Unified Notification Engine for Multi-Tenant SaaS
Deliver emails, SMS, WhatsApp, and chat notifications through a single developer API. Built with native enterprise isolation, custom SMTP profiles, and high-throughput Redis queues.
99.99%
Uptime SLA
< 5ms
Queue Dispatch
100%
Schema Isolated
6 Channels
Unified API
Simulate Real-Time Dispatch
Isolation: tenant_acme_corp.messages
Channel Adapter: EMAIL_DRIVER
Encryption: AES-256-GCM at rest
Execution Time: 3.8 ms
Built for Scale, Isolation, and Reliability
Enterprise foundations designed from the ground up to prevent multi-tenant data contamination while delivering millisecond execution.
Dedicated Tenant Cloud Isolation
Every organization operates inside a dedicated, cryptographically isolated cloud boundary. Zero cross-tenant data leakage risk, fully enterprise compliant.
Asynchronous Queue Engine
Powered by Redis and BullMQ for ultra-low latency dispatches with automatic retries, exponential backoff, and dead-letter queue recovery.
Tenant-Scoped SMTP & Gateways
Let each tenant bring their own custom SMTP servers, SendGrid/Postmark credentials, or fallback gracefully to platform defaults.
Template Orchestration
Design reusable templates with localized versions and dynamic variable interpolation across Email, SMS, WhatsApp, and Telegram.
Enterprise Observability
Full visibility across all dispatches, message queues, delivery audit streams, and system telemetry from your workspace control plane.
Developer First Experience
Idempotent REST APIs, webhooks signing, scoped API key rotation, and SDKs ready to plug into any backend in minutes.
One Clean API to Power Every Channel
Stop stitching separate SDKs for SendGrid, Twilio, Meta, and Telegram. Simplex abstracts delivery complexities into a unified schema-isolated interface.
import { SimplexClient } from "@simplex/sdk";
const simplex = new SimplexClient({
apiKey: process.env.SIMPLEX_API_KEY!,
});
await simplex.messages.send({
channel: "email",
to: { email: "alex@company.com" },
template: "welcome_flow_v2",
variables: { name: "Alex", company: "Acme Corp" },
});Simple Pricing for Teams of All Sizes
Start free, scale into high throughput Redis queues, and upgrade when your organization grows.
Developer
Ideal for early stage projects, prototypes, and testing multi-channel messaging.
- 10,000 messages / month
- Up to 3 Isolated Workspaces
- Custom SMTP Sender Profiles
- Email & SMS Channel Adapters
- Community Discord Support
Growth
Built for scaling SaaS products requiring high volume, workspace partitions, and full queue analytics.
- 500,000 messages / month
- Unlimited Workspaces
- WhatsApp & Telegram Adapters
- Dedicated Redis Queue Priority
- Real-Time Delivery Analytics
- 24/7 Priority Support
Enterprise
Dedicated infrastructure, custom SLAs, SOC2 compliance reports, and custom channel adapters.
- Unlimited Dispatches
- 99.99% Uptime SLA Guarantee
- Custom Gateway Connectors
- On-Premises / VPC Deployment
- Dedicated Solutions Engineer
- Custom Security Auditing
Ready to Modernize Your Messaging?
Get started with Simplex in under 5 minutes. Create your isolated schema, configure your SMTP sender, and dispatch your first message.