diff --git a/Tools/BiblioTech/Rewards/ChainEventsSender.cs b/Tools/BiblioTech/Rewards/ChainEventsSender.cs
index 2e1e9ec..bbad804 100644
--- a/Tools/BiblioTech/Rewards/ChainEventsSender.cs
+++ b/Tools/BiblioTech/Rewards/ChainEventsSender.cs
@@ -21,11 +21,14 @@ namespace BiblioTech.Rewards
             {
                 await Task.Run(async () =>
                 {
+                    var users = Program.UserRepo.GetAllUserData();
+
                     foreach (var e in eventsOverview)
                     {
                         if (!string.IsNullOrEmpty(e))
                         {
-                            await eventsChannel.SendMessageAsync(e);
+                            var @event = ApplyReplacements(users, e);
+                            await eventsChannel.SendMessageAsync(@event);
                             await Task.Delay(3000);
                         }
                     }
@@ -36,5 +39,26 @@ namespace BiblioTech.Rewards
                 log.Error("Failed to process chain events: " + ex);
             }
         }
+
+        private string ApplyReplacements(UserData[] users, string msg)
+        {
+            var result = ApplyUserAddressReplacements(users, msg);
+            return result;
+        }
+
+        private string ApplyUserAddressReplacements(UserData[] users, string msg)
+        {
+            foreach (var user in users)
+            {
+                if (user.CurrentAddress != null &&
+                    !string.IsNullOrEmpty(user.CurrentAddress.Address) &&
+                    !string.IsNullOrEmpty(user.Name))
+                {
+                    msg = msg.Replace(user.CurrentAddress.Address, user.Name);
+                }
+            }
+
+            return msg;
+        }
     }
 }
diff --git a/Tools/BiblioTech/UserData.cs b/Tools/BiblioTech/UserData.cs
new file mode 100644
index 0000000..540c326
--- /dev/null
+++ b/Tools/BiblioTech/UserData.cs
@@ -0,0 +1,66 @@
+using CodexContractsPlugin;
+using GethPlugin;
+
+namespace BiblioTech
+{
+    public class UserData
+    {
+        public UserData(ulong discordId, string name, DateTime createdUtc, EthAddress? currentAddress, List<UserAssociateAddressEvent> associateEvents, List<UserMintEvent> mintEvents, bool notificationsEnabled)
+        {
+            DiscordId = discordId;
+            Name = name;
+            CreatedUtc = createdUtc;
+            CurrentAddress = currentAddress;
+            AssociateEvents = associateEvents;
+            MintEvents = mintEvents;
+            NotificationsEnabled = notificationsEnabled;
+        }
+
+        public ulong DiscordId { get; }
+        public string Name { get; }
+        public DateTime CreatedUtc { get; }
+        public EthAddress? CurrentAddress { get; set; }
+        public List<UserAssociateAddressEvent> AssociateEvents { get; }
+        public List<UserMintEvent> MintEvents { get; }
+        public bool NotificationsEnabled { get; set; }
+
+        public string[] CreateOverview()
+        {
+            return new[]
+            {
+                $"name: '{Name}' - id:{DiscordId}",
+                $"joined: {CreatedUtc.ToString("o")}",
+                $"current address: {CurrentAddress}",
+                $"{AssociateEvents.Count + MintEvents.Count} total bot events."
+            };
+        }
+    }
+
+    public class UserAssociateAddressEvent
+    {
+        public UserAssociateAddressEvent(DateTime utc, EthAddress? newAddress)
+        {
+            Utc = utc;
+            NewAddress = newAddress;
+        }
+
+        public DateTime Utc { get; }
+        public EthAddress? NewAddress { get; }
+    }
+
+    public class UserMintEvent
+    {
+        public UserMintEvent(DateTime utc, EthAddress usedAddress, Transaction<Ether>? ethReceived, Transaction<TestToken>? testTokensMinted)
+        {
+            Utc = utc;
+            UsedAddress = usedAddress;
+            EthReceived = ethReceived;
+            TestTokensMinted = testTokensMinted;
+        }
+
+        public DateTime Utc { get; }
+        public EthAddress UsedAddress { get; }
+        public Transaction<Ether>? EthReceived { get; }
+        public Transaction<TestToken>? TestTokensMinted { get; }
+    }
+}
diff --git a/Tools/BiblioTech/UserRepo.cs b/Tools/BiblioTech/UserRepo.cs
index 01afbe9..7cd03fd 100644
--- a/Tools/BiblioTech/UserRepo.cs
+++ b/Tools/BiblioTech/UserRepo.cs
@@ -8,6 +8,7 @@ namespace BiblioTech
     public class UserRepo
     {
         private readonly object repoLock = new object();
+        private readonly Dictionary<ulong, UserData> cache = new Dictionary<ulong, UserData>();
 
         public bool AssociateUserWithAddress(IUser user, EthAddress address)
         {
@@ -33,6 +34,12 @@ namespace BiblioTech
             }
         }
 
+        public UserData[] GetAllUserData()
+        {
+            if (cache.Count == 0) LoadAllUserData();
+            return cache.Values.ToArray();  
+        }
+
         public void AddMintEventForUser(IUser user, EthAddress usedAddress, Transaction<Ether>? eth, Transaction<TestToken>? tokens)
         {
             lock (repoLock)
@@ -151,12 +158,19 @@ namespace BiblioTech
 
         private UserData? GetUserData(IUser user)
         {
+            if (cache.ContainsKey(user.Id))
+            {
+                return cache[user.Id];
+            }
+
             var filename = GetFilename(user);
             if (!File.Exists(filename))
             {
                 return null;
             }
-            return JsonConvert.DeserializeObject<UserData>(File.ReadAllText(filename))!;
+            var userData = JsonConvert.DeserializeObject<UserData>(File.ReadAllText(filename))!;
+            cache.Add(userData.DiscordId, userData);
+            return userData;
         }
 
         private UserData GetOrCreate(IUser user)
@@ -181,6 +195,15 @@ namespace BiblioTech
             var filename = GetFilename(userData);
             if (File.Exists(filename)) File.Delete(filename);
             File.WriteAllText(filename, JsonConvert.SerializeObject(userData));
+
+            if (cache.ContainsKey(userData.DiscordId))
+            {
+                cache[userData.DiscordId] = userData;
+            }
+            else
+            {
+                cache.Add(userData.DiscordId, userData);
+            }
         }
 
         private static string GetFilename(IUser user)
@@ -197,66 +220,29 @@ namespace BiblioTech
         {
             return Path.Combine(Program.Config.UserDataPath, discordId.ToString() + ".json");
         }
-    }
 
-    public class UserData
-    {
-        public UserData(ulong discordId, string name, DateTime createdUtc, EthAddress? currentAddress, List<UserAssociateAddressEvent> associateEvents, List<UserMintEvent> mintEvents, bool notificationsEnabled)
+        private void LoadAllUserData()
         {
-            DiscordId = discordId;
-            Name = name;
-            CreatedUtc = createdUtc;
-            CurrentAddress = currentAddress;
-            AssociateEvents = associateEvents;
-            MintEvents = mintEvents;
-            NotificationsEnabled = notificationsEnabled;
-        }
-
-        public ulong DiscordId { get; }
-        public string Name { get; }
-        public DateTime CreatedUtc { get; }
-        public EthAddress? CurrentAddress { get; set; }
-        public List<UserAssociateAddressEvent> AssociateEvents { get; }
-        public List<UserMintEvent> MintEvents { get; }
-        public bool NotificationsEnabled { get; set; }
-
-        public string[] CreateOverview()
-        {
-            return new[]
+            try
             {
-                $"name: '{Name}' - id:{DiscordId}",
-                $"joined: {CreatedUtc.ToString("o")}",
-                $"current address: {CurrentAddress}",
-                $"{AssociateEvents.Count + MintEvents.Count} total bot events."
-            };
+                var files = Directory.GetFiles(Program.Config.UserDataPath);
+                foreach (var file in files)
+                {
+                    try
+                    {
+                        var userData = JsonConvert.DeserializeObject<UserData>(File.ReadAllText(file))!;
+                        if (userData != null && userData.DiscordId > 0)
+                        {
+                            cache.Add(userData.DiscordId, userData);
+                        }
+                    }
+                    catch { }
+                }
+            }
+            catch (Exception ex)
+            {
+                Program.Log.Error("Exception while trying to load all user data: " + ex);
+            }
         }
     }
-
-    public class UserAssociateAddressEvent
-    {
-        public UserAssociateAddressEvent(DateTime utc, EthAddress? newAddress)
-        {
-            Utc = utc;
-            NewAddress = newAddress;
-        }
-
-        public DateTime Utc { get; }
-        public EthAddress? NewAddress { get; }
-    }
-
-    public class UserMintEvent
-    {
-        public UserMintEvent(DateTime utc, EthAddress usedAddress, Transaction<Ether>? ethReceived, Transaction<TestToken>? testTokensMinted)
-        {
-            Utc = utc;
-            UsedAddress = usedAddress;
-            EthReceived = ethReceived;
-            TestTokensMinted = testTokensMinted;
-        }
-
-        public DateTime Utc { get; }
-        public EthAddress UsedAddress { get; }
-        public Transaction<Ether>? EthReceived { get; }
-        public Transaction<TestToken>? TestTokensMinted { get; }
-    }
 }