Multi-channel notifications.
Zero infrastructure overhead.

Deliver real-time in-app notifications via WebSocket today. Plug in your own providers to instantly trigger email, SMS, and push, all through one unified API.

Start free

View docs

Trusted by teams at

Nimbus
Vertex
Craftly
Drift
Lumen
Forge

One API. Every channel.

Send to any channel from the same event. Boson routes, delivers, and logs.

events · in_app

POST /v1/events
{
  "channel": "in_app",
  "subscriberId": "user_123",
  "title": "Deploy finished",
  "body": "api-7f3c is live"
}

Inbox

2 unread

Deploy finished
2m
api-7f3c is live
Invite accepted
1h
maya joined the workspace
Quota warning
Yesterday
You are at 80% of Free

Built for production

Everything you need to send, track, and debug notifications at scale.

Multi-channel routing

Route events to email, SMS, push, and in-app from a single API.

Delivery logging

Every attempt lands in the activity log with status and metadata.

Real-time webhooks

Push delivery updates to your own systems with HMAC-SHA256 signing.

Environments

Separate keys and settings per environment. Playground stays out of prod.

Plugin architecture

Each channel is a handler. Add new channels without touching core.

Rate limiting

Per-tenant and per-channel rate limits keep your queues healthy.

From event to inbox in minutes

Three steps from an empty workspace to a live in-app notification.

Create a workspace

Send an event

POST a channel, subscriber, title, and body to the events API.

Get notified

In-app lands on the socket. Email, SMS, and push send when configured.

An API that feels like a library

One endpoint. Any channel. Authenticate with x-api-key and post an event.

curl -X POST https://api.getboson.com/v1/events \
  -H "content-type: application/json" \
  -H "x-api-key: $BOSON_API_KEY" \
  -d '{
    "channel": "in_app",
    "subscriberId": "user_123",
    "title": "Deploy finished",
    "body": "api-7f3c is live"
  }'

Routed by the worker

Each event names a channel. The worker looks up that handler, delivers, and writes the activity log.

Event
POST /v1/events
Worker
Queue + route
Handler
Channel plugin
Channel
In-app live
Activity
Logged attempt

Handler registry

An event names a channel; the worker looks up that handler and runs it.

Provider gates

Email, SMS, and push accept the same event and send when credentials exist.

Per-workspace isolation

Keys, environments, and activity stay scoped to the workspace that sent them.

Secure by default

Every webhook signed. Every payload scanned. Every request authenticated.

HMAC-SHA256 signing

Inbound and outbound webhooks are signed so you can verify authenticity before processing.

SSRF protection

Attachment URLs are checked before fetch so internal network targets stay blocked.

IP allowlisting

Restrict inbound webhooks to provider IP ranges. Reject everything else.

EICAR detection

Attachments are scanned for malware signatures and quarantined before they reach your inbox.

Retention controls

Keep inbound mail on the schedule you choose, with purge paths for cleanup.

Raw EML on disk

Original email is stored as EML on disk for full fidelity, not stuffed into Postgres.

Simple pricing

Start free. Scale when you need to. Checkout is not wired up on this site yet.

Free

for a side project

10,000 notifications / month
1 workspace
In-app inbox and delivery log