diff --git a/lib/ops/message-store-ops.js b/lib/ops/message-store-ops.js
--- a/lib/ops/message-store-ops.js
+++ b/lib/ops/message-store-ops.js
@@ -1,11 +1,18 @@
 // @flow
 
+import { type BaseStoreOpsHandlers } from './base-ops.js';
 import type {
   ClientDBMessageInfo,
   ClientDBThreadMessageInfo,
+  MessageStore,
   MessageStoreThreads,
   RawMessageInfo,
 } from '../types/message-types.js';
+import {
+  translateClientDBMessageInfoToRawMessageInfo,
+  translateRawMessageInfoToClientDBMessageInfo,
+  translateThreadMessageInfoToClientDBThreadMessageInfo,
+} from '../utils/message-ops-utils.js';
 
 // MessageStore messages ops
 export type RemoveMessageOperation = {
@@ -76,3 +83,114 @@
   | ClientDBReplaceThreadsOperation
   | RemoveMessageStoreThreadsOperation
   | RemoveMessageStoreAllThreadsOperation;
+
+export const messageStoreOpsHandlers: BaseStoreOpsHandlers<
+  MessageStore,
+  MessageStoreOperation,
+  ClientDBMessageStoreOperation,
+  { +[id: string]: RawMessageInfo },
+  ClientDBMessageInfo,
+> = {
+  processStoreOperations(
+    store: MessageStore,
+    ops: $ReadOnlyArray<MessageStoreOperation>,
+  ): MessageStore {
+    if (ops.length === 0) {
+      return store;
+    }
+    let processedMessages = { ...store.messages };
+    let processedThreads = { ...store.threads };
+    for (const operation of ops) {
+      if (operation.type === 'replace') {
+        processedMessages[operation.payload.id] = operation.payload.messageInfo;
+      } else if (operation.type === 'remove') {
+        for (const id of operation.payload.ids) {
+          delete processedMessages[id];
+        }
+      } else if (operation.type === 'remove_messages_for_threads') {
+        for (const msgID in processedMessages) {
+          if (
+            operation.payload.threadIDs.includes(
+              processedMessages[msgID].threadID,
+            )
+          ) {
+            delete processedMessages[msgID];
+          }
+        }
+      } else if (operation.type === 'rekey') {
+        processedMessages[operation.payload.to] =
+          processedMessages[operation.payload.from];
+        delete processedMessages[operation.payload.from];
+      } else if (operation.type === 'remove_all') {
+        processedMessages = {};
+      } else if (operation.type === 'replace_threads') {
+        for (const threadID in operation.payload.threads) {
+          processedThreads[threadID] = operation.payload.threads[threadID];
+        }
+      } else if (operation.type === 'remove_threads') {
+        for (const id of operation.payload.ids) {
+          delete processedThreads[id];
+        }
+      } else if (operation.type === 'remove_all_threads') {
+        processedThreads = {};
+      }
+    }
+    return {
+      ...store,
+      threads: processedThreads,
+      messages: processedMessages,
+    };
+  },
+
+  convertOpsToClientDBOps(
+    ops: $ReadOnlyArray<MessageStoreOperation>,
+  ): $ReadOnlyArray<ClientDBMessageStoreOperation> {
+    const convertedOperations = ops.map(messageStoreOperation => {
+      if (messageStoreOperation.type === 'replace') {
+        return {
+          type: 'replace',
+          payload: translateRawMessageInfoToClientDBMessageInfo(
+            messageStoreOperation.payload.messageInfo,
+          ),
+        };
+      }
+
+      if (messageStoreOperation.type !== 'replace_threads') {
+        return messageStoreOperation;
+      }
+
+      const threadMessageInfo: MessageStoreThreads =
+        messageStoreOperation.payload.threads;
+      const dbThreadMessageInfos: ClientDBThreadMessageInfo[] = [];
+      for (const threadID in threadMessageInfo) {
+        dbThreadMessageInfos.push(
+          translateThreadMessageInfoToClientDBThreadMessageInfo(
+            threadID,
+            threadMessageInfo[threadID],
+          ),
+        );
+      }
+      if (dbThreadMessageInfos.length === 0) {
+        return undefined;
+      }
+      return {
+        type: 'replace_threads',
+        payload: {
+          threads: dbThreadMessageInfos,
+        },
+      };
+    });
+    return convertedOperations.filter(Boolean);
+  },
+
+  translateClientDBData(data: $ReadOnlyArray<ClientDBMessageInfo>): {
+    +[id: string]: RawMessageInfo,
+  } {
+    return Object.fromEntries(
+      data.map((dbMessageInfo: ClientDBMessageInfo) => [
+        dbMessageInfo.id,
+        translateClientDBMessageInfoToRawMessageInfo(dbMessageInfo),
+      ]),
+    );
+  },
+};
diff --git a/lib/reducers/message-reducer.js b/lib/reducers/message-reducer.js
--- a/lib/reducers/message-reducer.js
+++ b/lib/reducers/message-reducer.js
@@ -53,9 +53,10 @@
   logInActionTypes,
   registerActionTypes,
 } from '../actions/user-actions.js';
-import type {
-  MessageStoreOperation,
-  ReplaceMessageOperation,
+import {
+  messageStoreOpsHandlers,
+  type MessageStoreOperation,
+  type ReplaceMessageOperation,
 } from '../ops/message-store-ops.js';
 import { pendingToRealizedThreadIDsSelector } from '../selectors/thread-selectors.js';
 import {
@@ -101,10 +102,7 @@
 } from '../types/update-types.js';
 import { setNewSessionActionType } from '../utils/action-utils.js';
 import { isDev } from '../utils/dev-utils.js';
-import {
-  translateClientDBMessageInfosToRawMessageInfos,
-  translateClientDBThreadMessageInfos,
-} from '../utils/message-ops-utils.js';
+import { translateClientDBThreadMessageInfos } from '../utils/message-ops-utils.js';
 import { assertObjectsAreEqual } from '../utils/objects.js';
 
 const PROCESSED_MSG_STORE_INVARIANTS_DISABLED = !isDev;
@@ -740,56 +738,8 @@
     : payload;
 }
 
-function processMessageStoreOperations(
-  messageStore: MessageStore,
-  messageStoreOperations: $ReadOnlyArray<MessageStoreOperation>,
-): MessageStore {
-  if (messageStoreOperations.length === 0) {
-    return messageStore;
-  }
-  let processedMessages = { ...messageStore.messages };
-  let processedThreads = { ...messageStore.threads };
-  for (const operation of messageStoreOperations) {
-    if (operation.type === 'replace') {
-      processedMessages[operation.payload.id] = operation.payload.messageInfo;
-    } else if (operation.type === 'remove') {
-      for (const id of operation.payload.ids) {
-        delete processedMessages[id];
-      }
-    } else if (operation.type === 'remove_messages_for_threads') {
-      for (const msgID in processedMessages) {
-        if (
-          operation.payload.threadIDs.includes(
-            processedMessages[msgID].threadID,
-          )
-        ) {
-          delete processedMessages[msgID];
-        }
-      }
-    } else if (operation.type === 'rekey') {
-      processedMessages[operation.payload.to] =
-        processedMessages[operation.payload.from];
-      delete processedMessages[operation.payload.from];
-    } else if (operation.type === 'remove_all') {
-      processedMessages = {};
-    } else if (operation.type === 'replace_threads') {
-      for (const threadID in operation.payload.threads) {
-        processedThreads[threadID] = operation.payload.threads[threadID];
-      }
-    } else if (operation.type === 'remove_threads') {
-      for (const id of operation.payload.ids) {
-        delete processedThreads[id];
-      }
-    } else if (operation.type === 'remove_all_threads') {
-      processedThreads = {};
-    }
-  }
-  return {
-    ...messageStore,
-    threads: processedThreads,
-    messages: processedMessages,
-  };
-}
+const { processStoreOperations: processMessageStoreOperations } =
+  messageStoreOpsHandlers;
 
 type ReduceMessageStoreResult = {
   +messageStoreOperations: $ReadOnlyArray<MessageStoreOperation>,
@@ -1705,7 +1655,7 @@
     }
     const threadsNeedMsgIDsResorting = new Set();
     const actionPayloadMessages =
-      translateClientDBMessageInfosToRawMessageInfos(payloadMessages);
+      messageStoreOpsHandlers.translateClientDBData(payloadMessages);
 
     // When starting the app on native, we filter out any local-only multimedia
     // messages because the relevant context is no longer available
diff --git a/lib/utils/message-ops-utils.js b/lib/utils/message-ops-utils.js
--- a/lib/utils/message-ops-utils.js
+++ b/lib/utils/message-ops-utils.js
@@ -7,10 +7,6 @@
   encryptedMediaBlobURI,
   encryptedVideoThumbnailBlobURI,
 } from '../media/media-utils.js';
-import type {
-  ClientDBMessageStoreOperation,
-  MessageStoreOperation,
-} from '../ops/message-store-ops.js';
 import { messageID } from '../shared/message-utils.js';
 import { messageSpecs } from '../shared/messages/message-specs.js';
 import type {
@@ -29,7 +25,6 @@
   type RawMessageInfo,
   type ClientDBThreadMessageInfo,
   type ThreadMessageInfo,
-  type MessageStoreThreads,
 } from '../types/message-types.js';
 import type { MediaMessageServerDBContent } from '../types/messages/media.js';
 
@@ -246,17 +241,6 @@
   ].rawMessageInfoFromClientDB(clientDBMessageInfo);
 }
 
-function translateClientDBMessageInfosToRawMessageInfos(
-  clientDBMessageInfos: $ReadOnlyArray<ClientDBMessageInfo>,
-): { +[id: string]: RawMessageInfo } {
-  return Object.fromEntries(
-    clientDBMessageInfos.map((dbMessageInfo: ClientDBMessageInfo) => [
-      dbMessageInfo.id,
-      translateClientDBMessageInfoToRawMessageInfo(dbMessageInfo),
-    ]),
-  );
-}
-
 type TranslatedThreadMessageInfo = {
   +startReached: boolean,
   +lastNavigatedTo: number,
@@ -295,49 +279,6 @@
   };
 }
 
-function convertMessageStoreOperationsToClientDBOperations(
-  messageStoreOperations: $ReadOnlyArray<MessageStoreOperation>,
-): $ReadOnlyArray<ClientDBMessageStoreOperation> {
-  const convertedOperations = messageStoreOperations.map(
-    messageStoreOperation => {
-      if (messageStoreOperation.type === 'replace') {
-        return {
-          type: 'replace',
-          payload: translateRawMessageInfoToClientDBMessageInfo(
-            messageStoreOperation.payload.messageInfo,
-          ),
-        };
-      }
-
-      if (messageStoreOperation.type !== 'replace_threads') {
-        return messageStoreOperation;
-      }
-
-      const threadMessageInfo: MessageStoreThreads =
-        messageStoreOperation.payload.threads;
-      const dbThreadMessageInfos: ClientDBThreadMessageInfo[] = [];
-      for (const threadID in threadMessageInfo) {
-        dbThreadMessageInfos.push(
-          translateThreadMessageInfoToClientDBThreadMessageInfo(
-            threadID,
-            threadMessageInfo[threadID],
-          ),
-        );
-      }
-      if (dbThreadMessageInfos.length === 0) {
-        return undefined;
-      }
-      return {
-        type: 'replace_threads',
-        payload: {
-          threads: dbThreadMessageInfos,
-        },
-      };
-    },
-  );
-  return convertedOperations.filter(Boolean);
-}
-
 function getPinnedContentFromClientDBMessageInfo(
   clientDBMessageInfo: ClientDBMessageInfo,
 ): string {
@@ -357,8 +298,6 @@
   translateClientDBMediaInfoToImage,
   translateRawMessageInfoToClientDBMessageInfo,
   translateClientDBMessageInfoToRawMessageInfo,
-  translateClientDBMessageInfosToRawMessageInfos,
-  convertMessageStoreOperationsToClientDBOperations,
   translateClientDBMediaInfosToMedia,
   getPinnedContentFromClientDBMessageInfo,
   translateClientDBThreadMessageInfos,
diff --git a/native/redux/persist.js b/native/redux/persist.js
--- a/native/redux/persist.js
+++ b/native/redux/persist.js
@@ -15,7 +15,10 @@
   convertCalendarFilterToNewIDSchema,
   convertConnectionInfoToNewIDSchema,
 } from 'lib/_generated/migration-utils.js';
-import type { ClientDBMessageStoreOperation } from 'lib/ops/message-store-ops.js';
+import {
+  type ClientDBMessageStoreOperation,
+  messageStoreOpsHandlers,
+} from 'lib/ops/message-store-ops.js';
 import {
   type ReportStoreOperation,
   type ClientDBReportStoreOperation,
@@ -49,7 +52,6 @@
 import { defaultConnectionInfo } from 'lib/types/socket-types.js';
 import type { ClientDBThreadInfo } from 'lib/types/thread-types.js';
 import {
-  convertMessageStoreOperationsToClientDBOperations,
   translateClientDBMessageInfoToRawMessageInfo,
   translateRawMessageInfoToClientDBMessageInfo,
 } from 'lib/utils/message-ops-utils.js';
@@ -537,7 +539,7 @@
     return state;
   },
   [37]: state => {
-    const operations = convertMessageStoreOperationsToClientDBOperations([
+    const operations = messageStoreOpsHandlers.convertOpsToClientDBOps([
       {
         type: 'remove_all_threads',
       },
diff --git a/native/redux/redux-utils.js b/native/redux/redux-utils.js
--- a/native/redux/redux-utils.js
+++ b/native/redux/redux-utils.js
@@ -2,10 +2,10 @@
 
 import { useSelector as reactReduxUseSelector } from 'react-redux';
 
+import { messageStoreOpsHandlers } from 'lib/ops/message-store-ops.js';
 import { reportStoreOpsHandlers } from 'lib/ops/report-store-ops.js';
 import { threadStoreOpsHandlers } from 'lib/ops/thread-store-ops.js';
 import type { StoreOperations } from 'lib/types/store-ops-types.js';
-import { convertMessageStoreOperationsToClientDBOperations } from 'lib/utils/message-ops-utils.js';
 
 import type { AppState } from './state-types.js';
 import { commCoreModule } from '../native-modules.js';
@@ -31,7 +31,7 @@
   const convertedThreadStoreOperations =
     threadStoreOpsHandlers.convertOpsToClientDBOps(threadStoreOperations);
   const convertedMessageStoreOperations =
-    convertMessageStoreOperationsToClientDBOperations(messageStoreOperations);
+    messageStoreOpsHandlers.convertOpsToClientDBOps(messageStoreOperations);
   const convertedReportStoreOperations =
     reportStoreOpsHandlers.convertOpsToClientDBOps(reportStoreOperations);