diff --git a/README.md b/README.md
index c27d8a9..e4c6324 100644
--- a/README.md
+++ b/README.md
@@ -69,9 +69,11 @@ All active subscribers, or a saved segment:
 await senddock.broadcast({ template_id: 'tpl-id' })
 
 await senddock.broadcast({ template_id: 'tpl-id', segment_id: 'seg-id' })
+
+await senddock.broadcast({ template_id: 'tpl-id', newsletter_id: 'nl-id' })
 ```
 
-Broadcasts require the instance to have a public URL configured (recipients need a working unsubscribe link).
+Broadcasts require the instance to have a public URL configured (recipients need a working unsubscribe link). A newsletter broadcast targets that publication's active members and gives each recipient a per-newsletter unsubscribe link — leaving the rest of the list and their project status untouched. `segment_id` and `newsletter_id` are mutually exclusive.
 
 ### Import subscribers
 
diff --git a/package.json b/package.json
index 10a17cb..eb0ddb3 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@senddock/sdk",
-  "version": "0.1.0",
-  "description": "Official TypeScript SDK for the SendDock API — self-hosted email marketing, isolated by project.",
+  "version": "0.2.0",
+  "description": "Official TypeScript SDK for the SendDock API \u2014 self-hosted email marketing, isolated by project.",
   "keywords": [
     "senddock",
     "email",
diff --git a/src/client.test.ts b/src/client.test.ts
index 8e3700b..8b8742e 100644
--- a/src/client.test.ts
+++ b/src/client.test.ts
@@ -71,6 +71,16 @@ describe('SendDock client', () => {
     expect(JSON.parse(init.body)).toEqual({ template_id: 't-1', segment_id: 'seg-1' })
   })
 
+  it('sends a newsletter broadcast and honours the per-newsletter unsubscribe', async () => {
+    const fetchMock = vi.fn().mockResolvedValue(jsonResponse(200, { sent: 12, broadcast_id: 'b-9' }))
+    const sd = makeClient(fetchMock)
+
+    await sd.broadcast({ template_id: 't-1', newsletter_id: 'nl-3' })
+
+    const [, init] = fetchMock.mock.calls[0]!
+    expect(JSON.parse(init.body)).toEqual({ template_id: 't-1', newsletter_id: 'nl-3' })
+  })
+
   it('imports subscribers as a bare array with validation flags', async () => {
     const fetchMock = vi.fn().mockResolvedValue(
       jsonResponse(200, {
diff --git a/src/types.test-d.ts b/src/types.test-d.ts
index 956b9a6..941af42 100644
--- a/src/types.test-d.ts
+++ b/src/types.test-d.ts
@@ -27,6 +27,8 @@ describe('compile-time contract', () => {
     void sd.sendBatch({ template_id: 't', recipients: [{ data: {} }] })
     // @ts-expect-error template_id is required
     void sd.broadcast({ segment_id: 's' })
+    // newsletter targeting is part of the runtime surface
+    void sd.broadcast({ template_id: 't', newsletter_id: 'nl-1' })
   })
 
   it('rejects invalid import rows at compile time', () => {
diff --git a/src/types.ts b/src/types.ts
index 1b1e45d..636e703 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -58,13 +58,16 @@ export interface BroadcastRequest {
   subject?: string
   variables?: Record<string, string>
   html_fields?: string[]
+  /** Target a saved segment. Mutually exclusive with `newsletter_id`. */
   segment_id?: string
+  /** Target a newsletter — recipients get a per-newsletter unsubscribe link. Mutually exclusive with `segment_id`. */
+  newsletter_id?: string
 }
 
 export interface BroadcastResponse {
   sent: number
-  failed: number
-  suppressed?: number
+  /** The broadcast id, so you can poll `GET /broadcasts` for the final sent/failed/suppressed tallies. */
+  broadcast_id?: string
 }
 
 export type SubscriberStatus = 'active' | 'pending' | 'unsubscribed'
@@ -116,6 +119,7 @@ export type WebhookEventType =
   | 'email.clicked'
   | 'subscriber.created'
   | 'subscriber.unsubscribed'
+  | 'subscriber.newsletter_unsubscribed'
 
 export interface WebhookEvent<T = Record<string, unknown>> {
   id: string