diff --git a/CHANGELOG.md b/CHANGELOG.md
index e2f6fb891b..5733c0639e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ Changes before Tatum release are not documented in this file.
 ### @streamr/sdk
 
 #### Added
+- Add support for using the plumtree optimization in stream partitions (https://github.com/streamr-dev/network/pull/3147)
 
 #### Changed
 
diff --git a/packages/sdk/src/NetworkNodeFacade.ts b/packages/sdk/src/NetworkNodeFacade.ts
index fa6fbdb067..50b678cd56 100644
--- a/packages/sdk/src/NetworkNodeFacade.ts
+++ b/packages/sdk/src/NetworkNodeFacade.ts
@@ -11,6 +11,7 @@ import {
     NetworkOptions,
     StreamMessage as NewStreamMessage,
     ProxyDirection,
+    StreamPartDeliveryOptions,
     createNetworkNode as createNetworkNode_
 } from '@streamr/trackerless-network'
 import { Logger, MetricsContext, StreamPartID, StreamPartIDUtils, UserID } from '@streamr/utils'
@@ -32,9 +33,16 @@ export interface NetworkNodeStub {
     getNodeId: () => DhtAddress
     addMessageListener: (listener: (msg: NewStreamMessage) => void) => void
     removeMessageListener: (listener: (msg: NewStreamMessage) => void) => void
-    join: (streamPartId: StreamPartID, neighborRequirement?: { minCount: number, timeout: number }) => Promise<void>
+    join: (
+        streamPartId: StreamPartID,
+        neighborRequirement?: { minCount: number, timeout: number },
+        deliveryOptions?: StreamPartDeliveryOptions
+    ) => Promise<void>
     leave: (streamPartId: StreamPartID) => Promise<void>
-    broadcast: (streamMessage: NewStreamMessage) => Promise<void>
+    broadcast: (
+        streamMessage: NewStreamMessage,
+        deliveryOptions?: StreamPartDeliveryOptions
+    ) => Promise<void>
     getStreamParts: () => StreamPartID[]
     getNeighbors: (streamPartId: StreamPartID) => readonly DhtAddress[]
     getPeerDescriptor: () => PeerDescriptor
@@ -214,9 +222,13 @@ export class NetworkNodeFacade {
         return node.getNodeId()
     }
 
-    async join(streamPartId: StreamPartID, neighborRequirement?: { minCount: number, timeout: number }): Promise<void> {
+    async join(
+        streamPartId: StreamPartID,
+        neighborRequirement?: { minCount: number, timeout: number },
+        deliveryOptions?: StreamPartDeliveryOptions
+    ): Promise<void> {
         const node = await this.getNode()
-        await node.join(streamPartId, neighborRequirement)
+        await node.join(streamPartId, neighborRequirement, deliveryOptions)
     }
 
     async leave(streamPartId: StreamPartID): Promise<void> {
@@ -224,9 +236,9 @@ export class NetworkNodeFacade {
         await node.leave(streamPartId)
     }
 
-    async broadcast(msg: OldStreamMessage): Promise<void> {
+    async broadcast(msg: OldStreamMessage, deliveryOptions?: StreamPartDeliveryOptions): Promise<void> {
         const node = await this.getNode()
-        node.broadcast(StreamMessageTranslator.toProtobuf(msg))
+        node.broadcast(StreamMessageTranslator.toProtobuf(msg), deliveryOptions)
     }
 
     addMessageListener(listener: (msg: OldStreamMessage) => void): void {
diff --git a/packages/sdk/src/StreamrClient.ts b/packages/sdk/src/StreamrClient.ts
index ef7ab205e3..ae42ad6181 100644
--- a/packages/sdk/src/StreamrClient.ts
+++ b/packages/sdk/src/StreamrClient.ts
@@ -7,7 +7,7 @@ import 'reflect-metadata'
 import './utils/PatchTsyringe'
 
 import { DhtAddress } from '@streamr/dht'
-import { ProxyDirection } from '@streamr/trackerless-network'
+import { ProxyDirection, StreamPartDeliveryOptions } from '@streamr/trackerless-network'
 import { DEFAULT_PARTITION_COUNT, EthereumAddress, HexString, Logger, StreamID, TheGraphClient, toEthereumAddress, toUserId } from '@streamr/utils'
 import type { Overrides } from 'ethers'
 import EventEmitter from 'eventemitter3'
@@ -79,6 +79,8 @@ export interface ExtraSubscribeOptions {
      * The streamr client wallet address must be an authorized signer for the contract.
      */
     erc1271Contract?: HexString
+
+    delivery?: StreamPartDeliveryOptions
 }
 
 const logger = new Logger(module)
@@ -165,9 +167,10 @@ export class StreamrClient {
     async publish(
         streamDefinition: StreamDefinition,
         content: unknown,
-        metadata?: PublishMetadata
+        metadata?: PublishMetadata,
+        deliveryOptions?: StreamPartDeliveryOptions
     ): Promise<Message> {
-        const result = await this.publisher.publish(streamDefinition, content, metadata)
+        const result = await this.publisher.publish(streamDefinition, content, metadata, deliveryOptions)
         this.eventEmitter.emit('messagePublished', result)
         return convertStreamMessageToMessage(result)
     }
@@ -227,6 +230,7 @@ export class StreamrClient {
             streamPartId,
             options.raw ?? false,
             options.erc1271Contract !== undefined ? toEthereumAddress(options.erc1271Contract) : undefined,
+            options.delivery ?? {},
             eventEmitter,
             this.loggerFactory
         )
diff --git a/packages/sdk/src/exports.ts b/packages/sdk/src/exports.ts
index 5fa699dc56..6ce3e540bd 100644
--- a/packages/sdk/src/exports.ts
+++ b/packages/sdk/src/exports.ts
@@ -65,6 +65,7 @@ export { convertBytesToStreamMessage, convertStreamMessageToBytes } from './prot
 export type { DhtAddress } from '@streamr/dht'
 export { ContentType, EncryptedGroupKey, EncryptionType,
     ProxyDirection, SignatureType } from '@streamr/trackerless-network'
+export type { StreamPartDeliveryOptions } from '@streamr/trackerless-network'
 export type { 
     StreamID,
     StreamPartID,
diff --git a/packages/sdk/src/publish/Publisher.ts b/packages/sdk/src/publish/Publisher.ts
index 6508c5935f..2af25a0471 100644
--- a/packages/sdk/src/publish/Publisher.ts
+++ b/packages/sdk/src/publish/Publisher.ts
@@ -16,6 +16,7 @@ import { createLazyMap, Mapping } from '../utils/Mapping'
 import { GroupKeyQueue } from './GroupKeyQueue'
 import { MessageFactory } from './MessageFactory'
 import { ConfigInjectionToken, type StrictStreamrClientConfig } from '../Config'
+import { StreamPartDeliveryOptions } from '@streamr/trackerless-network'
 
 export interface PublishMetadata {
     timestamp?: string | number | Date
@@ -87,7 +88,8 @@ export class Publisher {
     async publish(
         streamDefinition: StreamDefinition,
         content: unknown,
-        metadata?: PublishMetadata
+        metadata?: PublishMetadata,
+        deliveryOptions?: StreamPartDeliveryOptions
     ): Promise<StreamMessage> {
         const timestamp = parseTimestamp(metadata)
         /*
@@ -117,7 +119,7 @@ export class Publisher {
                     },
                     partition
                 )
-                await this.node.broadcast(message)
+                await this.node.broadcast(message, deliveryOptions)
                 return message
             } catch (e) {
                 const errorCode = (e instanceof StreamrClientError) ? e.code : 'UNKNOWN_ERROR'
diff --git a/packages/sdk/src/subscribe/Subscription.ts b/packages/sdk/src/subscribe/Subscription.ts
index e2a00aa5b6..f8459b2d79 100644
--- a/packages/sdk/src/subscribe/Subscription.ts
+++ b/packages/sdk/src/subscribe/Subscription.ts
@@ -2,6 +2,7 @@ import { EthereumAddress, Logger, StreamPartID } from '@streamr/utils'
 import EventEmitter from 'eventemitter3'
 import { LoggerFactory } from '../utils/LoggerFactory'
 import { MessageStream } from './MessageStream'
+import { StreamPartDeliveryOptions } from '@streamr/trackerless-network'
 
 /**
  * Events emitted by {@link Subscription}.
@@ -29,6 +30,7 @@ export class Subscription extends MessageStream {
     /** @internal */
     readonly isRaw: boolean
     readonly erc1271ContractAddress: EthereumAddress | undefined
+    readonly deliveryOptions: StreamPartDeliveryOptions | undefined
     private readonly eventEmitter: EventEmitter<SubscriptionEvents>
     private readonly logger: Logger
 
@@ -37,6 +39,7 @@ export class Subscription extends MessageStream {
         streamPartId: StreamPartID,
         isRaw: boolean,
         erc1271ContractAddress: EthereumAddress | undefined,
+        deliveryOptions: StreamPartDeliveryOptions | undefined,
         eventEmitter: EventEmitter<SubscriptionEvents>,
         loggerFactory: LoggerFactory
     ) {
@@ -44,6 +47,7 @@ export class Subscription extends MessageStream {
         this.streamPartId = streamPartId
         this.isRaw = isRaw
         this.erc1271ContractAddress = erc1271ContractAddress
+        this.deliveryOptions = deliveryOptions
         this.eventEmitter = eventEmitter
         this.logger = loggerFactory.createLogger(module)
         this.onError.listen((err) => {
diff --git a/packages/sdk/src/subscribe/SubscriptionSession.ts b/packages/sdk/src/subscribe/SubscriptionSession.ts
index 4b7964d2c6..8d44dd1da7 100644
--- a/packages/sdk/src/subscribe/SubscriptionSession.ts
+++ b/packages/sdk/src/subscribe/SubscriptionSession.ts
@@ -12,6 +12,10 @@ import { Subscription } from './Subscription'
  * A session contains one or more subscriptions to a single streamId + streamPartition pair.
  */
 
+const getAnyItemFromSet = <T>(set: Set<T>): T | undefined => {
+    return set.values().next().value
+}
+
 export class SubscriptionSession {
 
     public readonly streamPartId: StreamPartID
@@ -102,7 +106,8 @@ export class SubscriptionSession {
     private async subscribe(): Promise<void> {
         this.node.addMessageListener(this.onMessageInput)
         if (!await this.node.isProxiedStreamPart(this.streamPartId)) {
-            await this.node.join(this.streamPartId)
+            const deliveryOptions = getAnyItemFromSet(this.subscriptions)!.deliveryOptions
+            await this.node.join(this.streamPartId, undefined, deliveryOptions)
         }
     }
 
diff --git a/packages/sdk/src/utils/addStreamToStorageNode.ts b/packages/sdk/src/utils/addStreamToStorageNode.ts
index f10f94f32a..a4cd5236e0 100644
--- a/packages/sdk/src/utils/addStreamToStorageNode.ts
+++ b/packages/sdk/src/utils/addStreamToStorageNode.ts
@@ -36,6 +36,7 @@ export const addStreamToStorageNode = async (
                 streamPartId,
                 false,
                 undefined,
+                undefined,
                 new EventEmitter<SubscriptionEvents>(),
                 loggerFactory
             )
diff --git a/packages/sdk/test/unit/SubscriptionSession.test.ts b/packages/sdk/test/unit/SubscriptionSession.test.ts
index 8531d6c44c..97cd59468a 100644
--- a/packages/sdk/test/unit/SubscriptionSession.test.ts
+++ b/packages/sdk/test/unit/SubscriptionSession.test.ts
@@ -14,7 +14,7 @@ const ADDRESS_ONE = randomEthereumAddress()
 const ADDRESS_TWO = randomEthereumAddress()
 
 function createSubscription(erc1271contractAddress?: EthereumAddress): Subscription {
-    return new Subscription(STREAM_PART_ID, false, erc1271contractAddress, mock(), mock())
+    return new Subscription(STREAM_PART_ID, false, erc1271contractAddress, undefined, mock(), mock())
 }
 
 describe('SubscriptionSession', () => {
diff --git a/packages/sdk/test/unit/resendSubscription.test.ts b/packages/sdk/test/unit/resendSubscription.test.ts
index fbfbfc867e..c56668f267 100644
--- a/packages/sdk/test/unit/resendSubscription.test.ts
+++ b/packages/sdk/test/unit/resendSubscription.test.ts
@@ -102,7 +102,7 @@ describe('resend subscription', () => {
         gapFill = true
     ) => {
         const eventEmitter = new EventEmitter<SubscriptionEvents>()
-        sub = new Subscription(STREAM_PART_ID, false, undefined, eventEmitter, mockLoggerFactory())
+        sub = new Subscription(STREAM_PART_ID, false, undefined, undefined, eventEmitter, mockLoggerFactory())
         initResendSubscription(
             sub,
             {} as any,
diff --git a/packages/trackerless-network/src/ContentDeliveryManager.ts b/packages/trackerless-network/src/ContentDeliveryManager.ts
index 25bd0d1f00..8375bd96dc 100644
--- a/packages/trackerless-network/src/ContentDeliveryManager.ts
+++ b/packages/trackerless-network/src/ContentDeliveryManager.ts
@@ -75,7 +75,7 @@ export interface ContentDeliveryManagerOptions {
 }
 
 export interface StreamPartDeliveryOptions {
-    plumTreeOptimisation?: boolean
+    plumtreeOptimization?: boolean
 }
 
 export const streamPartIdToDataKey = (streamPartId: StreamPartID): DhtAddress => {
@@ -288,7 +288,7 @@ export class ContentDeliveryManager extends EventEmitter<Events> {
             neighborUpdateInterval: this.options.neighborUpdateInterval,
             isLocalNodeEntryPoint,
             doNotBufferWhileConnecting: this.options.doNotBufferWhileConnecting,
-            plumTreeOptimisation: streamPartDeliveryOptions?.plumTreeOptimisation
+            plumtreeOptimization: streamPartDeliveryOptions?.plumtreeOptimization
         })
     }
 
diff --git a/packages/trackerless-network/src/content-delivery-layer/createContentDeliveryLayerNode.ts b/packages/trackerless-network/src/content-delivery-layer/createContentDeliveryLayerNode.ts
index 9f07e88905..d44c8e3ff5 100644
--- a/packages/trackerless-network/src/content-delivery-layer/createContentDeliveryLayerNode.ts
+++ b/packages/trackerless-network/src/content-delivery-layer/createContentDeliveryLayerNode.ts
@@ -35,7 +35,7 @@ type ContentDeliveryLayerNodeOptions = MarkOptional<StrictContentDeliveryLayerNo
         neighborUpdateInterval?: number
         maxPropagationBufferSize?: number
         doNotBufferWhileConnecting?: boolean
-        plumTreeOptimisation?: boolean
+        plumtreeOptimization?: boolean
     }
 
 const createConfigWithDefaults = (options: ContentDeliveryLayerNodeOptions): StrictContentDeliveryLayerNodeOptions => {
@@ -68,7 +68,7 @@ const createConfigWithDefaults = (options: ContentDeliveryLayerNodeOptions): Str
         streamPartId: options.streamPartId,
         rpcCommunicator
     }) : undefined
-    const plumtreeManager = options.plumTreeOptimisation ? new PlumtreeManager({
+    const plumtreeManager = options.plumtreeOptimization ? new PlumtreeManager({
         neighbors,
         localPeerDescriptor: options.localPeerDescriptor,
         rpcCommunicator
diff --git a/packages/trackerless-network/src/exports.ts b/packages/trackerless-network/src/exports.ts
index 36e340e7b0..29d337483c 100644
--- a/packages/trackerless-network/src/exports.ts
+++ b/packages/trackerless-network/src/exports.ts
@@ -1,6 +1,6 @@
 export { NetworkNode, createNetworkNode } from './NetworkNode'
 export { type NetworkOptions, NetworkStack } from './NetworkStack'
-export { type ContentDeliveryManagerOptions, streamPartIdToDataKey } from './ContentDeliveryManager'
+export { type ContentDeliveryManagerOptions, type StreamPartDeliveryOptions, streamPartIdToDataKey } from './ContentDeliveryManager'
 export {
     AsymmetricEncryptionType,
     ContentType,
diff --git a/packages/trackerless-network/test/utils/utils.ts b/packages/trackerless-network/test/utils/utils.ts
index 2ce13b5837..6b08915b11 100644
--- a/packages/trackerless-network/test/utils/utils.ts
+++ b/packages/trackerless-network/test/utils/utils.ts
@@ -41,7 +41,7 @@ export const createMockContentDeliveryLayerNodeAndDhtNode = async (
     entryPointDescriptor: PeerDescriptor,
     streamPartId: StreamPartID,
     simulator: Simulator,
-    plumTreeOptimisation?: boolean
+    plumtreeOptimization?: boolean
 ): Promise<[ DiscoveryLayerNode, ContentDeliveryLayerNode ]> => {
     const mockCm = new SimulatorTransport(localPeerDescriptor, simulator)
     await mockCm.start()
@@ -62,7 +62,7 @@ export const createMockContentDeliveryLayerNodeAndDhtNode = async (
         localPeerDescriptor,
         rpcRequestTimeout: 5000,
         isLocalNodeEntryPoint: () => false,
-        plumTreeOptimisation
+        plumtreeOptimization
     })
     return [discoveryLayerNode, contentDeliveryLayerNode]
 }