diff --git a/lib/shared/dm-ops/dm-op-utils.js b/lib/shared/dm-ops/dm-op-utils.js
index cc850cc8f..948f6d6d3 100644
--- a/lib/shared/dm-ops/dm-op-utils.js
+++ b/lib/shared/dm-ops/dm-op-utils.js
@@ -1,252 +1,265 @@
 // @flow
 
 import invariant from 'invariant';
 import * as React from 'react';
 import uuid from 'uuid';
 
 import { dmOpSpecs } from './dm-op-specs.js';
 import { useProcessAndSendDMOperation } from './process-dm-ops.js';
 import type {
   CreateThickRawThreadInfoInput,
   DMAddMembersOperation,
   DMAddViewerToThreadMembersOperation,
   DMOperation,
+  ComposableDMOperation,
 } from '../../types/dm-ops.js';
 import type {
   ThickRawThreadInfo,
   ThreadInfo,
 } from '../../types/minimally-encoded-thread-permissions-types.js';
 import type { InboundActionMetadata } from '../../types/redux-types.js';
 import {
   outboundP2PMessageStatuses,
   type OutboundP2PMessage,
 } from '../../types/sqlite-types.js';
 import {
   assertThickThreadType,
   thickThreadTypes,
 } from '../../types/thread-types-enum.js';
 import type { RawThreadInfos } from '../../types/thread-types.js';
 import {
   type DMOperationP2PMessage,
   userActionsP2PMessageTypes,
 } from '../../types/tunnelbroker/user-actions-peer-to-peer-message-types.js';
 import type { CurrentUserInfo } from '../../types/user-types.js';
 import { getContentSigningKey } from '../../utils/crypto-utils.js';
 import { useSelector } from '../../utils/redux-utils.js';
 
 function generateMessagesToPeers(
   message: DMOperation,
   peers: $ReadOnlyArray<{
     +userID: string,
     +deviceID: string,
   }>,
 ): $ReadOnlyArray<OutboundP2PMessage> {
   const opMessage: DMOperationP2PMessage = {
     type: userActionsP2PMessageTypes.DM_OPERATION,
     op: message,
   };
   const plaintext = JSON.stringify(opMessage);
   const outboundP2PMessages = [];
   for (const peer of peers) {
     const messageToPeer: OutboundP2PMessage = {
       messageID: uuid.v4(),
       deviceID: peer.deviceID,
       userID: peer.userID,
       timestamp: new Date().getTime().toString(),
       plaintext,
       ciphertext: '',
       status: outboundP2PMessageStatuses.persisted,
       supportsAutoRetry: dmOpSpecs[message.type].supportsAutoRetry,
     };
     outboundP2PMessages.push(messageToPeer);
   }
   return outboundP2PMessages;
 }
 
 export const dmOperationSpecificationTypes = Object.freeze({
   OUTBOUND: 'OutboundDMOperationSpecification',
   INBOUND: 'InboundDMOperationSpecification',
 });
 
+type OutboundDMOperationSpecificationRecipients =
+  | { +type: 'all_peer_devices' | 'self_devices' }
+  | { +type: 'some_users', +userIDs: $ReadOnlyArray<string> }
+  | { +type: 'all_thread_members', +threadID: string }
+  | { +type: 'some_devices', +deviceIDs: $ReadOnlyArray<string> };
+
 // The operation generated on the sending client, causes changes to
 // the state and broadcasting information to peers.
 export type OutboundDMOperationSpecification = {
   +type: 'OutboundDMOperationSpecification',
   +op: DMOperation,
-  +recipients:
-    | { +type: 'all_peer_devices' | 'self_devices' }
-    | { +type: 'some_users', +userIDs: $ReadOnlyArray<string> }
-    | { +type: 'all_thread_members', +threadID: string }
-    | { +type: 'some_devices', +deviceIDs: $ReadOnlyArray<string> },
+  +recipients: OutboundDMOperationSpecificationRecipients,
   +sendOnly?: boolean,
 };
 
+export type OutboundComposableDMOperationSpecification = {
+  +type: 'OutboundDMOperationSpecification',
+  +op: ComposableDMOperation,
+  +recipients: OutboundDMOperationSpecificationRecipients,
+  // Composable DM Ops are created only to be sent, locally we use
+  // dedicated mechanism for updating the store.
+  +sendOnly: true,
+  +composableMessageID: string,
+};
+
 // The operation received from other peers, causes changes to
 // the state and after processing, sends confirmation to the sender.
 export type InboundDMOperationSpecification = {
   +type: 'InboundDMOperationSpecification',
   +op: DMOperation,
   +metadata: ?InboundActionMetadata,
 };
 
 export type DMOperationSpecification =
   | OutboundDMOperationSpecification
   | InboundDMOperationSpecification;
 
 async function createMessagesToPeersFromDMOp(
   operation: OutboundDMOperationSpecification,
   allPeerUserIDAndDeviceIDs: $ReadOnlyArray<{
     +userID: string,
     +deviceID: string,
   }>,
   currentUserInfo: ?CurrentUserInfo,
   threadInfos: RawThreadInfos,
 ): Promise<$ReadOnlyArray<OutboundP2PMessage>> {
   if (!currentUserInfo?.id) {
     return [];
   }
 
   let peerUserIDAndDeviceIDs = allPeerUserIDAndDeviceIDs;
   if (operation.recipients.type === 'self_devices') {
     peerUserIDAndDeviceIDs = allPeerUserIDAndDeviceIDs.filter(
       peer => peer.userID === currentUserInfo.id,
     );
   } else if (operation.recipients.type === 'some_users') {
     const userIDs = new Set(operation.recipients.userIDs);
     peerUserIDAndDeviceIDs = allPeerUserIDAndDeviceIDs.filter(peer =>
       userIDs.has(peer.userID),
     );
   } else if (operation.recipients.type === 'all_thread_members') {
     const members = threadInfos[operation.recipients.threadID]?.members ?? [];
     const memberIDs = members.map(member => member.id);
 
     const userIDs = new Set(memberIDs);
     peerUserIDAndDeviceIDs = allPeerUserIDAndDeviceIDs.filter(peer =>
       userIDs.has(peer.userID),
     );
   } else if (operation.recipients.type === 'some_devices') {
     const deviceIDs = new Set(operation.recipients.deviceIDs);
     peerUserIDAndDeviceIDs = allPeerUserIDAndDeviceIDs.filter(peer =>
       deviceIDs.has(peer.deviceID),
     );
   }
 
   const thisDeviceID = await getContentSigningKey();
   const targetPeers = peerUserIDAndDeviceIDs.filter(
     peer => peer.deviceID !== thisDeviceID,
   );
   return generateMessagesToPeers(operation.op, targetPeers);
 }
 
 function getCreateThickRawThreadInfoInputFromThreadInfo(
   threadInfo: ThickRawThreadInfo,
 ): CreateThickRawThreadInfoInput {
   const roleID = Object.keys(threadInfo.roles).pop();
   const thickThreadType = assertThickThreadType(threadInfo.type);
   return {
     threadID: threadInfo.id,
     threadType: thickThreadType,
     creationTime: threadInfo.creationTime,
     parentThreadID: threadInfo.parentThreadID,
     allMemberIDsWithSubscriptions: threadInfo.members.map(
       ({ id, subscription }) => ({
         id,
         subscription,
       }),
     ),
     roleID,
     unread: !!threadInfo.currentUser.unread,
     name: threadInfo.name,
     avatar: threadInfo.avatar,
     description: threadInfo.description,
     color: threadInfo.color,
     containingThreadID: threadInfo.containingThreadID,
     sourceMessageID: threadInfo.sourceMessageID,
     repliesCount: threadInfo.repliesCount,
     pinnedCount: threadInfo.pinnedCount,
     timestamps: threadInfo.timestamps,
   };
 }
 
 function useAddDMThreadMembers(): (
   newMemberIDs: $ReadOnlyArray<string>,
   threadInfo: ThreadInfo,
 ) => Promise<void> {
   const viewerID = useSelector(
     state => state.currentUserInfo && state.currentUserInfo.id,
   );
   const processAndSendDMOperation = useProcessAndSendDMOperation();
   const threadInfos = useSelector(state => state.threadStore.threadInfos);
 
   return React.useCallback(
     async (newMemberIDs: $ReadOnlyArray<string>, threadInfo: ThreadInfo) => {
       const rawThreadInfo = threadInfos[threadInfo.id];
       invariant(rawThreadInfo.thick, 'thread should be thick');
       const existingThreadDetails =
         getCreateThickRawThreadInfoInputFromThreadInfo(rawThreadInfo);
 
       invariant(viewerID, 'viewerID should be set');
       const addViewerToThreadMembersOperation: DMAddViewerToThreadMembersOperation =
         {
           type: 'add_viewer_to_thread_members',
           existingThreadDetails,
           editorID: viewerID,
           time: Date.now(),
           messageID: uuid.v4(),
           addedUserIDs: newMemberIDs,
         };
       const viewerOperationSpecification: OutboundDMOperationSpecification = {
         type: dmOperationSpecificationTypes.OUTBOUND,
         op: addViewerToThreadMembersOperation,
         recipients: {
           type: 'some_users',
           userIDs: newMemberIDs,
         },
         sendOnly: true,
       };
 
       invariant(viewerID, 'viewerID should be set');
       const addMembersOperation: DMAddMembersOperation = {
         type: 'add_members',
         threadID: threadInfo.id,
         editorID: viewerID,
         time: Date.now(),
         messageID: uuid.v4(),
         addedUserIDs: newMemberIDs,
       };
       const newMemberIDsSet = new Set<string>(newMemberIDs);
       const recipientsThreadID =
         threadInfo.type === thickThreadTypes.THICK_SIDEBAR &&
         threadInfo.parentThreadID
           ? threadInfo.parentThreadID
           : threadInfo.id;
 
       const existingMembers =
         threadInfos[recipientsThreadID]?.members
           ?.map(member => member.id)
           ?.filter(memberID => !newMemberIDsSet.has(memberID)) ?? [];
 
       const addMembersOperationSpecification: OutboundDMOperationSpecification =
         {
           type: dmOperationSpecificationTypes.OUTBOUND,
           op: addMembersOperation,
           recipients: {
             type: 'some_users',
             userIDs: existingMembers,
           },
         };
 
       await Promise.all([
         processAndSendDMOperation(viewerOperationSpecification),
         processAndSendDMOperation(addMembersOperationSpecification),
       ]);
     },
     [processAndSendDMOperation, threadInfos, viewerID],
   );
 }
 
 export {
   createMessagesToPeersFromDMOp,
   useAddDMThreadMembers,
   getCreateThickRawThreadInfoInputFromThreadInfo,
 };
diff --git a/lib/types/dm-ops.js b/lib/types/dm-ops.js
index 26df5a0fe..975a3e19b 100644
--- a/lib/types/dm-ops.js
+++ b/lib/types/dm-ops.js
@@ -1,460 +1,464 @@
 // @flow
 
 import t, { type TInterface, type TUnion } from 'tcomb';
 
 import { clientAvatarValidator, type ClientAvatar } from './avatar-types.js';
 import { type Media, mediaValidator } from './media-types.js';
 import type { RawMessageInfo } from './message-types.js';
 import type { NotificationsCreationData } from './notif-types.js';
 import type { OutboundP2PMessage } from './sqlite-types.js';
 import {
   type ThreadSubscription,
   threadSubscriptionValidator,
 } from './subscription-types.js';
 import {
   type NonSidebarThickThreadType,
   nonSidebarThickThreadTypes,
   type ThickThreadType,
   thickThreadTypeValidator,
 } from './thread-types-enum.js';
 import {
   threadTimestampsValidator,
   type ThreadTimestamps,
 } from './thread-types.js';
 import type { ClientUpdateInfo } from './update-types.js';
 import { values } from '../utils/objects.js';
 import { tColor, tShape, tString, tUserID } from '../utils/validation-utils.js';
 
 export const dmOperationTypes = Object.freeze({
   CREATE_THREAD: 'create_thread',
   CREATE_SIDEBAR: 'create_sidebar',
   SEND_TEXT_MESSAGE: 'send_text_message',
   SEND_MULTIMEDIA_MESSAGE: 'send_multimedia_message',
   SEND_REACTION_MESSAGE: 'send_reaction_message',
   SEND_EDIT_MESSAGE: 'send_edit_message',
   ADD_MEMBERS: 'add_members',
   ADD_VIEWER_TO_THREAD_MEMBERS: 'add_viewer_to_thread_members',
   JOIN_THREAD: 'join_thread',
   LEAVE_THREAD: 'leave_thread',
   REMOVE_MEMBERS: 'remove_members',
   CHANGE_THREAD_SETTINGS: 'change_thread_settings',
   CHANGE_THREAD_SUBSCRIPTION: 'change_thread_subscription',
   CHANGE_THREAD_READ_STATUS: 'change_thread_read_status',
 });
 export type DMOperationType = $Values<typeof dmOperationTypes>;
 
 type MemberIDWithSubscription = {
   +id: string,
   +subscription: ThreadSubscription,
 };
 export const memberIDWithSubscriptionValidator: TInterface<MemberIDWithSubscription> =
   tShape<MemberIDWithSubscription>({
     id: tUserID,
     subscription: threadSubscriptionValidator,
   });
 
 export type CreateThickRawThreadInfoInput = {
   +threadID: string,
   +threadType: ThickThreadType,
   +creationTime: number,
   +parentThreadID?: ?string,
   +allMemberIDsWithSubscriptions: $ReadOnlyArray<MemberIDWithSubscription>,
   +roleID: string,
   +unread: boolean,
   +timestamps: ThreadTimestamps,
   +name?: ?string,
   +avatar?: ?ClientAvatar,
   +description?: ?string,
   +color?: ?string,
   +containingThreadID?: ?string,
   +sourceMessageID?: ?string,
   +repliesCount?: ?number,
   +pinnedCount?: ?number,
 };
 export const createThickRawThreadInfoInputValidator: TInterface<CreateThickRawThreadInfoInput> =
   tShape<CreateThickRawThreadInfoInput>({
     threadID: t.String,
     threadType: thickThreadTypeValidator,
     creationTime: t.Number,
     parentThreadID: t.maybe(t.String),
     allMemberIDsWithSubscriptions: t.list(memberIDWithSubscriptionValidator),
     roleID: t.String,
     unread: t.Boolean,
     timestamps: threadTimestampsValidator,
     name: t.maybe(t.String),
     avatar: t.maybe(clientAvatarValidator),
     description: t.maybe(t.String),
     color: t.maybe(t.String),
     containingThreadID: t.maybe(t.String),
     sourceMessageID: t.maybe(t.String),
     repliesCount: t.maybe(t.Number),
     pinnedCount: t.maybe(t.Number),
   });
 
 export type DMCreateThreadOperation = {
   +type: 'create_thread',
   +threadID: string,
   +creatorID: string,
   +time: number,
   +threadType: NonSidebarThickThreadType,
   +memberIDs: $ReadOnlyArray<string>,
   +roleID: string,
   +newMessageID: string,
 };
 export const dmCreateThreadOperationValidator: TInterface<DMCreateThreadOperation> =
   tShape<DMCreateThreadOperation>({
     type: tString(dmOperationTypes.CREATE_THREAD),
     threadID: t.String,
     creatorID: tUserID,
     time: t.Number,
     threadType: t.enums.of(values(nonSidebarThickThreadTypes)),
     memberIDs: t.list(tUserID),
     roleID: t.String,
     newMessageID: t.String,
   });
 
 export type DMCreateSidebarOperation = {
   +type: 'create_sidebar',
   +threadID: string,
   +creatorID: string,
   +time: number,
   +parentThreadID: string,
   +memberIDs: $ReadOnlyArray<string>,
   +sourceMessageID: string,
   +roleID: string,
   +newSidebarSourceMessageID: string,
   +newCreateSidebarMessageID: string,
 };
 export const dmCreateSidebarOperationValidator: TInterface<DMCreateSidebarOperation> =
   tShape<DMCreateSidebarOperation>({
     type: tString(dmOperationTypes.CREATE_SIDEBAR),
     threadID: t.String,
     creatorID: tUserID,
     time: t.Number,
     parentThreadID: t.String,
     memberIDs: t.list(tUserID),
     sourceMessageID: t.String,
     roleID: t.String,
     newSidebarSourceMessageID: t.String,
     newCreateSidebarMessageID: t.String,
   });
 
 export type DMSendTextMessageOperation = {
   +type: 'send_text_message',
   +threadID: string,
   +creatorID: string,
   +time: number,
   +messageID: string,
   +text: string,
 };
 export const dmSendTextMessageOperationValidator: TInterface<DMSendTextMessageOperation> =
   tShape<DMSendTextMessageOperation>({
     type: tString(dmOperationTypes.SEND_TEXT_MESSAGE),
     threadID: t.String,
     creatorID: tUserID,
     time: t.Number,
     messageID: t.String,
     text: t.String,
   });
 
 export type DMSendMultimediaMessageOperation = {
   +type: 'send_multimedia_message',
   +threadID: string,
   +creatorID: string,
   +time: number,
   +messageID: string,
   +media: $ReadOnlyArray<Media>,
 };
 export const dmSendMultimediaMessageOperationValidator: TInterface<DMSendMultimediaMessageOperation> =
   tShape<DMSendMultimediaMessageOperation>({
     type: tString(dmOperationTypes.SEND_MULTIMEDIA_MESSAGE),
     threadID: t.String,
     creatorID: tUserID,
     time: t.Number,
     messageID: t.String,
     media: t.list(mediaValidator),
   });
 
 export type DMSendReactionMessageOperation = {
   +type: 'send_reaction_message',
   +threadID: string,
   +creatorID: string,
   +time: number,
   +messageID: string,
   +targetMessageID: string,
   +reaction: string,
   +action: 'add_reaction' | 'remove_reaction',
 };
 export const dmSendReactionMessageOperationValidator: TInterface<DMSendReactionMessageOperation> =
   tShape<DMSendReactionMessageOperation>({
     type: tString(dmOperationTypes.SEND_REACTION_MESSAGE),
     threadID: t.String,
     creatorID: tUserID,
     time: t.Number,
     messageID: t.String,
     targetMessageID: t.String,
     reaction: t.String,
     action: t.enums.of(['add_reaction', 'remove_reaction']),
   });
 
 export type DMSendEditMessageOperation = {
   +type: 'send_edit_message',
   +threadID: string,
   +creatorID: string,
   +time: number,
   +messageID: string,
   +targetMessageID: string,
   +text: string,
 };
 export const dmSendEditMessageOperationValidator: TInterface<DMSendEditMessageOperation> =
   tShape<DMSendEditMessageOperation>({
     type: tString(dmOperationTypes.SEND_EDIT_MESSAGE),
     threadID: t.String,
     creatorID: tUserID,
     time: t.Number,
     messageID: t.String,
     targetMessageID: t.String,
     text: t.String,
   });
 
 type DMAddMembersBase = {
   +editorID: string,
   +time: number,
   +addedUserIDs: $ReadOnlyArray<string>,
 };
 const dmAddMembersBaseValidatorShape = {
   editorID: tUserID,
   time: t.Number,
   addedUserIDs: t.list(tUserID),
 };
 
 export type DMAddMembersOperation = $ReadOnly<{
   +type: 'add_members',
   +threadID: string,
   +messageID: string,
   ...DMAddMembersBase,
 }>;
 export const dmAddMembersOperationValidator: TInterface<DMAddMembersOperation> =
   tShape<DMAddMembersOperation>({
     type: tString(dmOperationTypes.ADD_MEMBERS),
     threadID: t.String,
     messageID: t.String,
     ...dmAddMembersBaseValidatorShape,
   });
 
 export type DMAddViewerToThreadMembersOperation = $ReadOnly<{
   +type: 'add_viewer_to_thread_members',
   +messageID: ?string,
   +existingThreadDetails: CreateThickRawThreadInfoInput,
   ...DMAddMembersBase,
 }>;
 export const dmAddViewerToThreadMembersValidator: TInterface<DMAddViewerToThreadMembersOperation> =
   tShape<DMAddViewerToThreadMembersOperation>({
     type: tString(dmOperationTypes.ADD_VIEWER_TO_THREAD_MEMBERS),
     messageID: t.maybe(t.String),
     existingThreadDetails: createThickRawThreadInfoInputValidator,
     ...dmAddMembersBaseValidatorShape,
   });
 
 export type DMJoinThreadOperation = {
   +type: 'join_thread',
   +joinerID: string,
   +time: number,
   +messageID: string,
   +existingThreadDetails: CreateThickRawThreadInfoInput,
 };
 export const dmJoinThreadOperationValidator: TInterface<DMJoinThreadOperation> =
   tShape<DMJoinThreadOperation>({
     type: tString(dmOperationTypes.JOIN_THREAD),
     joinerID: tUserID,
     time: t.Number,
     messageID: t.String,
     existingThreadDetails: createThickRawThreadInfoInputValidator,
   });
 
 export type DMLeaveThreadOperation = {
   +type: 'leave_thread',
   +editorID: string,
   +time: number,
   +messageID: string,
   +threadID: string,
 };
 export const dmLeaveThreadOperationValidator: TInterface<DMLeaveThreadOperation> =
   tShape<DMLeaveThreadOperation>({
     type: tString(dmOperationTypes.LEAVE_THREAD),
     editorID: tUserID,
     time: t.Number,
     messageID: t.String,
     threadID: t.String,
   });
 
 export type DMRemoveMembersOperation = {
   +type: 'remove_members',
   +editorID: string,
   +time: number,
   +messageID: string,
   +threadID: string,
   +removedUserIDs: $ReadOnlyArray<string>,
 };
 export const dmRemoveMembersOperationValidator: TInterface<DMRemoveMembersOperation> =
   tShape<DMRemoveMembersOperation>({
     type: tString(dmOperationTypes.REMOVE_MEMBERS),
     editorID: tUserID,
     time: t.Number,
     messageID: t.String,
     threadID: t.String,
     removedUserIDs: t.list(tUserID),
   });
 
 export type DMThreadSettingsChanges = {
   +name?: string,
   +description?: string,
   +color?: string,
   +avatar?: ClientAvatar | null,
 };
 
 export type DMChangeThreadSettingsOperation = $ReadOnly<{
   +type: 'change_thread_settings',
   +threadID: string,
   +editorID: string,
   +time: number,
   +changes: DMThreadSettingsChanges,
   +messageIDsPrefix: string,
 }>;
 export const dmChangeThreadSettingsOperationValidator: TInterface<DMChangeThreadSettingsOperation> =
   tShape<DMChangeThreadSettingsOperation>({
     type: tString(dmOperationTypes.CHANGE_THREAD_SETTINGS),
     threadID: t.String,
     editorID: tUserID,
     time: t.Number,
     changes: tShape({
       name: t.maybe(t.String),
       description: t.maybe(t.String),
       color: t.maybe(tColor),
       avatar: t.maybe(clientAvatarValidator),
     }),
     messageIDsPrefix: t.String,
   });
 
 export type DMChangeThreadSubscriptionOperation = {
   +type: 'change_thread_subscription',
   +time: number,
   +threadID: string,
   +creatorID: string,
   +subscription: ThreadSubscription,
 };
 export const dmChangeThreadSubscriptionOperationValidator: TInterface<DMChangeThreadSubscriptionOperation> =
   tShape<DMChangeThreadSubscriptionOperation>({
     type: tString(dmOperationTypes.CHANGE_THREAD_SUBSCRIPTION),
     time: t.Number,
     threadID: t.String,
     creatorID: tUserID,
     subscription: threadSubscriptionValidator,
   });
 
 export type DMChangeThreadReadStatusOperation = {
   +type: 'change_thread_read_status',
   +time: number,
   +threadID: string,
   +creatorID: string,
   +unread: boolean,
 };
 export const dmChangeThreadReadStatusOperationValidator: TInterface<DMChangeThreadReadStatusOperation> =
   tShape<DMChangeThreadReadStatusOperation>({
     type: tString(dmOperationTypes.CHANGE_THREAD_READ_STATUS),
     time: t.Number,
     threadID: t.String,
     creatorID: tUserID,
     unread: t.Boolean,
   });
 
+export type ComposableDMOperation =
+  | DMSendTextMessageOperation
+  | DMSendMultimediaMessageOperation;
+
 export type DMOperation =
   | DMCreateThreadOperation
   | DMCreateSidebarOperation
   | DMSendTextMessageOperation
   | DMSendMultimediaMessageOperation
   | DMSendReactionMessageOperation
   | DMSendEditMessageOperation
   | DMAddMembersOperation
   | DMAddViewerToThreadMembersOperation
   | DMJoinThreadOperation
   | DMLeaveThreadOperation
   | DMRemoveMembersOperation
   | DMChangeThreadSettingsOperation
   | DMChangeThreadSubscriptionOperation
   | DMChangeThreadReadStatusOperation;
 export const dmOperationValidator: TUnion<DMOperation> = t.union([
   dmCreateThreadOperationValidator,
   dmCreateSidebarOperationValidator,
   dmSendTextMessageOperationValidator,
   dmSendMultimediaMessageOperationValidator,
   dmSendReactionMessageOperationValidator,
   dmSendEditMessageOperationValidator,
   dmAddMembersOperationValidator,
   dmAddViewerToThreadMembersValidator,
   dmJoinThreadOperationValidator,
   dmLeaveThreadOperationValidator,
   dmRemoveMembersOperationValidator,
   dmChangeThreadSettingsOperationValidator,
   dmChangeThreadSubscriptionOperationValidator,
   dmChangeThreadReadStatusOperationValidator,
 ]);
 
 export type DMOperationResult = {
   rawMessageInfos: Array<RawMessageInfo>,
   updateInfos: Array<ClientUpdateInfo>,
 };
 
 export const processDMOpsActionType = 'PROCESS_DM_OPS';
 
 export type ProcessDMOpsPayload = {
   +rawMessageInfos: $ReadOnlyArray<RawMessageInfo>,
   +updateInfos: $ReadOnlyArray<ClientUpdateInfo>,
   +outboundP2PMessages: ?$ReadOnlyArray<OutboundP2PMessage>,
   // For messages that could be retried from UI, we need to bind DM `messageID`
   // with `outboundP2PMessages` to keep track of whether all P2P messages
   // were queued on Tunnelbroker.
   +composableMessageID: ?string,
   +notificationsCreationData: ?NotificationsCreationData,
 };
 
 export const queueDMOpsActionType = 'QUEUE_DM_OPS';
 export type QueueDMOpsPayload = {
   +operation: DMOperation,
   +threadID: string,
   +timestamp: number,
 };
 
 export const pruneDMOpsQueueActionType = 'PRUNE_DM_OPS_QUEUE';
 export type PruneDMOpsQueuePayload = {
   +pruneMaxTimestamp: number,
 };
 
 export const clearQueuedThreadDMOpsActionType = 'CLEAR_QUEUED_THREAD_DM_OPS';
 export type ClearQueuedThreadDMOpsPayload = {
   +threadID: string,
 };
 
 export type QueuedDMOperations = {
   +operations: {
     +[threadID: string]: $ReadOnlyArray<{
       +operation: DMOperation,
       +timestamp: number,
     }>,
   },
 };
 
 export type SendDMStartedPayload = {
   +messageID: string,
 };
 
 export type SendDMOpsSuccessPayload = {
   +messageID: string,
   +outboundP2PMessageIDs: $ReadOnlyArray<string>,
 };
 
 export const sendDMActionTypes = Object.freeze({
   started: 'SEND_DM_STARTED',
   success: 'SEND_DM_SUCCESS',
   failed: 'SEND_DM_FAILED',
 });