The Complete "How, When, and Where" for Your SaaS Communications.
Stop building brittle notification scripts. Drop in a centralized, multi-tenant Go microservice that handles complex routing, Quiet Hours, strict payload validation, and omnichannel delivery (Email, SMS, Push, In-App, Slack, Webhooks) via REST, gRPC, and native MCP server—letting both your code and AI agents orchestrate communications.
The Architecture: Total Separation of Concerns
In a standard startup, every microservice tries to render HTML emails and manage third-party API rate limits. Launch Rail changes the paradigm.
Your domain services simply trigger an event (billing.payment_successful) and pass a JSON payload. The Notification Core takes over, executing a rigorous middleware chain.
Catalog Validator
Validates the payload against a strict JSON Schema to ensure no broken templates are ever sent.
Preference & Mute Filter
Checks global opt-outs, category preferences, and granular topic muting (e.g., 'Mute this specific document thread').
Quiet Hours Rescheduler
Pauses non-critical alerts if the user is sleeping, dropping them automatically if they exceed their Time-To-Live (TTL).
Dispatcher
Reactively renders localized templates and routes to the correct channel worker (Email, SMS, Slack, Webhook).
Enterprise Features, Out-of-the-Box
Everything you need to orchestrate a world-class communication platform.
Configuration as Code (Events Catalog)
Manage your entire taxonomy in a single events_catalog.yaml. Enforce strict payload schemas. If a microservice forgets a variable, the gRPC call fails instantly—protecting users from broken 'Hi $NaN' emails.
Intelligent Quiet Hours & TTL
Respect your users' time natively. Low-priority events are held until morning. If an event sits longer than its default_ttl, it drops to prevent spam. Critical security alerts bypass filters automatically.
Built-In In-App Notification Center
Don't build your own feed. We provide APIs (List, MarkRead, GetUnread) supporting interactive Action Buttons (Primary, Danger) and collapse_keys to group similar events automatically.
Granular User Controls
Give users the ultimate settings page. Fetch the Notification Catalog to render toggle switches per category/channel. Users can mute specific topics or pause across an entire workspace.
Built for the Toughest Developer Edge Cases
We engineered this for teams who have suffered the pain of manually scaling notification systems in production.
Anti-Self-Spam
Pass an actor_id alongside the user_id. If they match, the system automatically drops the notification to prevent users from pinging themselves.
True Idempotency
Pass an idempotency_key with every trigger to guarantee a user is never charged twice or emailed twice for the entire same event.
Admin Support Logs
When a customer asks 'Why did I not get that email?', hit the GetEventLogs endpoint to see the exact lifecycle (e.g., 'Dropped due to Quiet Hours').
Engagement Tracking
Native webhook endpoints to track EVENT_STATUS_OPENED, EVENT_STATUS_CLICKED, and EVENT_STATUS_BOUNCED for deep analytics.
AI Agents Talk to Notifications Natively
Every Launch Rail service ships with a built-in MCP server. Your AI agents can discover tools, read resources, and execute actions—no wrappers, no custom integrations.
MCP Tools
Actions agents can execute
send_notificationTrigger a notification event with payload and channel routing
mute_topicMute a specific notification topic for a user
mark_readMark in-app notifications as read by ID or bulk
get_event_logsRetrieve the full lifecycle of a notification event
MCP Resources
Data agents can read
notifications://catalogFull events catalog with schemas and channel mappings
notifications://users/{id}/preferencesUser notification preferences and mute settings
notifications://users/{id}/feedIn-app notification feed with unread counts
In Practice
What this looks like
“Send a payment confirmation email to user 42 and also post it to the #billing Slack channel”
Calls send_notification tool with event 'billing.payment_successful' → validates against catalog schema → routes to Email + Slack channels → confirms delivery with event ID and status tracking.
Real-World Value: Notifications in Action
See how teams across industries use Notifications to ship faster, reduce costs, and deliver enterprise-grade experiences from day one.
HIPAA-Compliant Patient Alerts
Send appointment reminders via SMS, lab results via secure in-app feed, and emergency alerts that bypass Quiet Hours. Full audit trail for every notification with engagement tracking.
Transactional & Marketing Orchestration
Order confirmations, shipping updates, and abandoned cart nudges—all through a single event catalog. Quiet Hours ensure promotional emails don't hit at 3 AM. TTL drops stale events automatically.
Real-Time Transaction Alerts
Critical fraud alerts bypass all filters instantly. Low-priority marketing holds until morning. Users control per-channel preferences (Push for urgent, Email for reports) via granular settings.
Multi-Channel Event Updates
Ticket confirmations via email, last-minute venue changes via Push + SMS, and post-event surveys via in-app. Collapse keys group similar updates so attendees aren't spammed.
Why Buy the License? (The ROI)
Building a multi-tenant notification engine with ConnectRPC, JSON validation, scheduling, grouping, and observability takes a senior engineering team months.
With Launch Rail, you get the complete, production-ready Golang source code today.
Zero Vendor Lock-in
Host it entirely on your own Kubernetes clusters.
Complete Control
Modify the pipeline to fit your exact proprietary edge cases.
Universal Compatibility
gRPC for internal microservice chatter, REST for external clients.