diff --git a/ts/session/apis/open_group_api/sogsv3/sogsApiV3.ts b/ts/session/apis/open_group_api/sogsv3/sogsApiV3.ts
index b4c0eac86..190c7ec15 100644
--- a/ts/session/apis/open_group_api/sogsv3/sogsApiV3.ts
+++ b/ts/session/apis/open_group_api/sogsv3/sogsApiV3.ts
@@ -34,7 +34,7 @@ import { handleOutboxMessageModel } from '../../../../receiver/dataMessage';
 import { ConversationTypeEnum } from '../../../../models/conversationAttributes';
 import { createSwarmMessageSentFromUs } from '../../../../models/messageFactory';
 import { Data } from '../../../../data/data';
-import { handleOpenGroupMessageReactions } from '../../../../util/reactions';
+import { processMessagesUsingCache } from './sogsV3MutationCache';
 
 /**
  * Get the convo matching those criteria and make sure it is an opengroup convo, or return null.
@@ -312,7 +312,7 @@ const handleMessagesResponseV4 = async (
       if (groupConvo && groupConvo.isOpenGroupV2()) {
         for (const message of messagesWithReactions) {
           void groupConvo.queueJob(async () => {
-            await handleOpenGroupMessageReactions(message.reactions, message.id);
+            await processMessagesUsingCache(serverUrl, roomId, message);
           });
         }
       }
diff --git a/ts/session/apis/open_group_api/sogsv3/sogsV3MutationCache.ts b/ts/session/apis/open_group_api/sogsv3/sogsV3MutationCache.ts
index 775636108..9cefe2591 100644
--- a/ts/session/apis/open_group_api/sogsv3/sogsV3MutationCache.ts
+++ b/ts/session/apis/open_group_api/sogsv3/sogsV3MutationCache.ts
@@ -3,7 +3,9 @@
  * Currently only supports message reactions 26/08/2022
  */
 
-import { findIndex } from 'lodash';
+import { filter, findIndex, remove } from 'lodash';
+import { handleOpenGroupMessageReactions } from '../../../../util/reactions';
+import { OpenGroupMessageV4 } from '../opengroupV2/OpenGroupServerPoller';
 
 export enum ChangeType {
   REACTIONS = 0,
@@ -19,8 +21,8 @@ type ReactionChange = {
 
 export type SogsV3Mutation = {
   seqno: number | null; // null until mutating API request returns
-  server: string; // server address
-  room: string; // room name
+  server: string; // serverUrl
+  room: string; // roomId
   changeType: ChangeType;
   metadata: ReactionChange; // For now we only support message reactions
 };
@@ -42,27 +44,92 @@ function verifyEntry(entry: SogsV3Mutation): boolean {
 
 export function addToMutationCache(entry: SogsV3Mutation) {
   if (!verifyEntry(entry)) {
-    window.log.error('SOGS Mutation Cache: Entry verification failed!');
+    window.log.error('SOGS Mutation Cache: Entry verification on add failed!', entry);
   } else {
     sogsMutationCache.push(entry);
     window.log.info('SOGS Mutation Cache: Entry added!', entry);
   }
 }
 
-export function updateMutationCache(entry: SogsV3Mutation) {
+export function updateMutationCache(entry: SogsV3Mutation, seqno: number) {
   if (!verifyEntry(entry)) {
-    window.log.error('SOGS Mutation Cache: Entry verification failed!');
+    window.log.error('SOGS Mutation Cache: Entry verification on update failed!');
   } else {
     const entryIndex = findIndex(sogsMutationCache, entry);
     if (entryIndex >= 0) {
-      sogsMutationCache[entryIndex] = entry;
-      window.log.info('SOGS Mutation Cache: Entry updated!', entry);
+      const updatedEntry = entry;
+      updatedEntry.seqno = seqno;
+      sogsMutationCache[entryIndex] = updatedEntry;
+      window.log.info('SOGS Mutation Cache: Entry updated!', updatedEntry);
     } else {
-      window.log.error('SOGS Mutation Cache: Updated failed! Cannot find entry');
+      window.log.error('SOGS Mutation Cache: Updated failed! Cannot find entry', entry);
     }
   }
 }
 
-export function removeFromMutationCache() {
-  // TODO
+export async function processMessagesUsingCache(
+  server: string,
+  room: string,
+  message: OpenGroupMessageV4
+) {
+  const updatedReactions = message.reactions;
+  const matches: Array<SogsV3Mutation> = filter(sogsMutationCache, { server, room });
+
+  if (matches?.length) {
+    for (const match of matches) {
+      if (message.seqno && match.seqno && match.seqno <= message.seqno) {
+        const removedEntry = remove(sogsMutationCache, match);
+        window.log.info('SOGS Mutation Cache: Entry ignored and removed!', removedEntry);
+      } else if (!message.seqno || (message.seqno && match.seqno && match.seqno > message.seqno)) {
+        for (const reaction of Object.keys(message.reactions)) {
+          const _matches = filter(sogsMutationCache, {
+            server,
+            room,
+            changeType: ChangeType.REACTIONS,
+            metadata: {
+              messageId: message.id,
+              emoji: reaction,
+            },
+          });
+          if (_matches?.length) {
+            for (const match of _matches) {
+              switch (match.metadata.action) {
+                case 'ADD':
+                  updatedReactions[reaction].you = true;
+                  updatedReactions[reaction].count += 1;
+                  window.log.info(
+                    'SOGS Mutation Cache: Added our reaction based on the cache',
+                    updatedReactions[reaction]
+                  );
+                  break;
+                case 'REMOVE':
+                  updatedReactions[reaction].you = false;
+                  updatedReactions[reaction].count -= 1;
+                  window.log.info(
+                    'SOGS Mutation Cache: Removed our reaction based on the cache',
+                    updatedReactions[reaction]
+                  );
+                  break;
+                default:
+                  window.log.warn(
+                    'SOGS Mutation Cache: Unsupported metadata action in OpenGroupMessageV4',
+                    match
+                  );
+                  break;
+              }
+            }
+
+            const removedMatches = remove(sogsMutationCache, ...matches);
+            window.log.info(
+              'SOGS Mutation Cache: Removed processed entries from cache!',
+              removedMatches
+            );
+          }
+        }
+      }
+    }
+  }
+
+  message.reactions = updatedReactions;
+  await handleOpenGroupMessageReactions(message.reactions, message.id);
 }
diff --git a/ts/session/apis/open_group_api/sogsv3/sogsV3SendReaction.ts b/ts/session/apis/open_group_api/sogsv3/sogsV3SendReaction.ts
index 3796f9cdc..f92980891 100644
--- a/ts/session/apis/open_group_api/sogsv3/sogsV3SendReaction.ts
+++ b/ts/session/apis/open_group_api/sogsv3/sogsV3SendReaction.ts
@@ -36,7 +36,7 @@ export const hasReactionSupport = async (serverId: number): Promise<boolean> =>
 
 export const sendSogsReactionOnionV4 = async (
   serverUrl: string,
-  room: string,
+  room: string, // this is the roomId
   abortSignal: AbortSignal,
   reaction: Reaction,
   blinded: boolean
@@ -107,16 +107,10 @@ export const sendSogsReactionOnionV4 = async (
     throw new Error('putReaction parsing failed');
   }
 
-  window.log.info(
-    `You ${reaction.action === Action.REACT ? 'added' : 'removed'} a`,
-    reaction.emoji,
-    `reaction on ${serverUrl}/${room}`
-  );
   const success = Boolean(reaction.action === Action.REACT ? rawMessage.added : rawMessage.removed);
 
-  if (success && rawMessage.seqno) {
-    cacheEntry.seqno = rawMessage.seqno;
-    updateMutationCache(cacheEntry);
+  if (success) {
+    updateMutationCache(cacheEntry, rawMessage.seqno);
   }
 
   return success;
diff --git a/ts/util/reactions.ts b/ts/util/reactions.ts
index 1d1b50a05..7cf1a759c 100644
--- a/ts/util/reactions.ts
+++ b/ts/util/reactions.ts
@@ -124,7 +124,11 @@ export const sendMessageReaction = async (messageId: string, emoji: string) => {
       `You ${action === Action.REACT ? 'added' : 'removed'} a`,
       emoji,
       'reaction for message',
-      id
+      id,
+      found.get('isPublic') &&
+        `on ${conversationModel.toOpenGroupV2().serverUrl}/${
+          conversationModel.toOpenGroupV2().roomId
+        }`
     );
     return reaction;
   } else {