diff --git a/src/main/java/com/pahimar/ee3/blacklist/BlacklistRegistry.java b/src/main/java/com/pahimar/ee3/blacklist/BlacklistRegistry.java
index f2474f60..49d6f6b2 100644
--- a/src/main/java/com/pahimar/ee3/blacklist/BlacklistRegistry.java
+++ b/src/main/java/com/pahimar/ee3/blacklist/BlacklistRegistry.java
@@ -33,7 +33,7 @@ public class BlacklistRegistry {
 
     private final Set<WrappedStack> knowledgeBlacklist, exchangeBlacklist;
     public static File knowledgeBlacklistFile, exchangeBlacklistFile;
-    private transient boolean loadedFromServer;
+    private transient boolean shouldSave;
 
     /**
      * TODO Finish JavaDoc
@@ -42,7 +42,7 @@ public class BlacklistRegistry {
 
         knowledgeBlacklist = new TreeSet<>();
         exchangeBlacklist = new TreeSet<>();
-        loadedFromServer = false;
+        shouldSave = true;
     }
 
     /**
@@ -161,6 +161,10 @@ public class BlacklistRegistry {
         }
     }
 
+    public void setShouldSave(boolean shouldSave) {
+        this.shouldSave = shouldSave;
+    }
+
     /**
      * TODO Finish JavaDoc
      */
@@ -185,7 +189,7 @@ public class BlacklistRegistry {
 
         if (blacklist != null && blacklistSet != null) {
 
-            loadedFromServer = true;
+            setShouldSave(false);
 
             if (blacklist == Blacklist.KNOWLEDGE) {
                 LogHelper.info("Received {} player knowledge blacklist entries from server", blacklistSet.size());
@@ -207,7 +211,7 @@ public class BlacklistRegistry {
      */
     public void save(Blacklist blacklist) {
 
-        if (!loadedFromServer) {
+        if (shouldSave) {
             if (blacklist == Blacklist.KNOWLEDGE) {
                 LogHelper.trace(BLACKLIST_MARKER, "Saving player knowledge blacklist to {}", knowledgeBlacklistFile.getAbsolutePath());
                 SerializationHelper.writeJsonFile(knowledgeBlacklistFile, SerializationHelper.GSON.toJson(knowledgeBlacklist));
@@ -224,7 +228,7 @@ public class BlacklistRegistry {
      */
     public void saveAll() {
 
-        if (!loadedFromServer) {
+        if (shouldSave) {
             LogHelper.trace(BLACKLIST_MARKER, "Saving all blacklists to disk", exchangeBlacklistFile.getAbsolutePath());
             SerializationHelper.writeJsonFile(knowledgeBlacklistFile, SerializationHelper.GSON.toJson(knowledgeBlacklist));
             SerializationHelper.writeJsonFile(exchangeBlacklistFile, SerializationHelper.GSON.toJson(exchangeBlacklist));
diff --git a/src/main/java/com/pahimar/ee3/command/CommandSetItemLearnable.java b/src/main/java/com/pahimar/ee3/command/CommandSetItemLearnable.java
index 3105d49a..e1e7a266 100644
--- a/src/main/java/com/pahimar/ee3/command/CommandSetItemLearnable.java
+++ b/src/main/java/com/pahimar/ee3/command/CommandSetItemLearnable.java
@@ -1,6 +1,8 @@
 package com.pahimar.ee3.command;
 
 import com.pahimar.ee3.api.blacklist.BlacklistRegistryProxy;
+import com.pahimar.ee3.network.PacketHandler;
+import com.pahimar.ee3.network.message.MessageSetBlacklistEntry;
 import com.pahimar.ee3.reference.Messages;
 import com.pahimar.ee3.reference.Names;
 import net.minecraft.command.CommandBase;
@@ -77,6 +79,7 @@ public class CommandSetItemLearnable extends CommandBase
             }
 
             BlacklistRegistryProxy.removeFromBlacklist(itemStack, BlacklistRegistryProxy.Blacklist.KNOWLEDGE);
+            PacketHandler.INSTANCE.sendToAll(new MessageSetBlacklistEntry(itemStack, BlacklistRegistryProxy.Blacklist.KNOWLEDGE, false));
             func_152373_a(commandSender, this, Messages.Commands.SET_ITEM_LEARNABLE_SUCCESS, new Object[]{commandSender.getCommandSenderName(), itemStack.func_151000_E()});
         }
     }
diff --git a/src/main/java/com/pahimar/ee3/command/CommandSetItemNotLearnable.java b/src/main/java/com/pahimar/ee3/command/CommandSetItemNotLearnable.java
index 5302cec1..53f150a8 100644
--- a/src/main/java/com/pahimar/ee3/command/CommandSetItemNotLearnable.java
+++ b/src/main/java/com/pahimar/ee3/command/CommandSetItemNotLearnable.java
@@ -1,6 +1,8 @@
 package com.pahimar.ee3.command;
 
 import com.pahimar.ee3.api.blacklist.BlacklistRegistryProxy;
+import com.pahimar.ee3.network.PacketHandler;
+import com.pahimar.ee3.network.message.MessageSetBlacklistEntry;
 import com.pahimar.ee3.reference.Messages;
 import com.pahimar.ee3.reference.Names;
 import net.minecraft.command.CommandBase;
@@ -77,6 +79,7 @@ public class CommandSetItemNotLearnable extends CommandBase
             }
 
             BlacklistRegistryProxy.addToBlacklist(itemStack, BlacklistRegistryProxy.Blacklist.KNOWLEDGE);
+            PacketHandler.INSTANCE.sendToAll(new MessageSetBlacklistEntry(itemStack, BlacklistRegistryProxy.Blacklist.KNOWLEDGE, true));
             func_152373_a(commandSender, this, Messages.Commands.SET_ITEM_NOT_LEARNABLE_SUCCESS, new Object[]{commandSender.getCommandSenderName(), itemStack.func_151000_E()});
         }
     }
diff --git a/src/main/java/com/pahimar/ee3/command/CommandSetItemNotRecoverable.java b/src/main/java/com/pahimar/ee3/command/CommandSetItemNotRecoverable.java
index 2b4f4d5b..4321c07f 100644
--- a/src/main/java/com/pahimar/ee3/command/CommandSetItemNotRecoverable.java
+++ b/src/main/java/com/pahimar/ee3/command/CommandSetItemNotRecoverable.java
@@ -1,6 +1,8 @@
 package com.pahimar.ee3.command;
 
 import com.pahimar.ee3.api.blacklist.BlacklistRegistryProxy;
+import com.pahimar.ee3.network.PacketHandler;
+import com.pahimar.ee3.network.message.MessageSetBlacklistEntry;
 import com.pahimar.ee3.reference.Messages;
 import com.pahimar.ee3.reference.Names;
 import net.minecraft.command.CommandBase;
@@ -77,6 +79,7 @@ public class CommandSetItemNotRecoverable extends CommandBase
             }
 
             BlacklistRegistryProxy.addToBlacklist(itemStack, BlacklistRegistryProxy.Blacklist.EXCHANGE);
+            PacketHandler.INSTANCE.sendToAll(new MessageSetBlacklistEntry(itemStack, BlacklistRegistryProxy.Blacklist.EXCHANGE, true));
             func_152373_a(commandSender, this, Messages.Commands.SET_ITEM_NOT_RECOVERABLE_SUCCESS, new Object[]{commandSender.getCommandSenderName(), itemStack.func_151000_E()});
         }
     }
diff --git a/src/main/java/com/pahimar/ee3/command/CommandSetItemRecoverable.java b/src/main/java/com/pahimar/ee3/command/CommandSetItemRecoverable.java
index b30a6010..cb6b2ffa 100644
--- a/src/main/java/com/pahimar/ee3/command/CommandSetItemRecoverable.java
+++ b/src/main/java/com/pahimar/ee3/command/CommandSetItemRecoverable.java
@@ -1,6 +1,8 @@
 package com.pahimar.ee3.command;
 
 import com.pahimar.ee3.api.blacklist.BlacklistRegistryProxy;
+import com.pahimar.ee3.network.PacketHandler;
+import com.pahimar.ee3.network.message.MessageSetBlacklistEntry;
 import com.pahimar.ee3.reference.Messages;
 import com.pahimar.ee3.reference.Names;
 import net.minecraft.command.CommandBase;
@@ -77,6 +79,7 @@ public class CommandSetItemRecoverable extends CommandBase
             }
 
             BlacklistRegistryProxy.removeFromBlacklist(itemStack, BlacklistRegistryProxy.Blacklist.EXCHANGE);
+            PacketHandler.INSTANCE.sendToAll(new MessageSetBlacklistEntry(itemStack, BlacklistRegistryProxy.Blacklist.EXCHANGE, true));
             func_152373_a(commandSender, this, Messages.Commands.SET_ITEM_RECOVERABLE_SUCCESS, new Object[]{commandSender.getCommandSenderName(), itemStack.func_151000_E()});
         }
     }
diff --git a/src/main/java/com/pahimar/ee3/network/message/MessageSetBlacklistEntry.java b/src/main/java/com/pahimar/ee3/network/message/MessageSetBlacklistEntry.java
index fbe23f36..a1a35327 100644
--- a/src/main/java/com/pahimar/ee3/network/message/MessageSetBlacklistEntry.java
+++ b/src/main/java/com/pahimar/ee3/network/message/MessageSetBlacklistEntry.java
@@ -1,26 +1,131 @@
 package com.pahimar.ee3.network.message;
 
+import com.google.gson.JsonParseException;
+import com.pahimar.ee3.api.blacklist.BlacklistRegistryProxy;
+import com.pahimar.ee3.blacklist.BlacklistRegistry;
+import com.pahimar.ee3.exchange.WrappedStack;
+import com.pahimar.ee3.util.CompressionHelper;
+import com.pahimar.ee3.util.LogHelper;
+import com.pahimar.ee3.util.SerializationHelper;
 import cpw.mods.fml.common.network.simpleimpl.IMessage;
 import cpw.mods.fml.common.network.simpleimpl.IMessageHandler;
 import cpw.mods.fml.common.network.simpleimpl.MessageContext;
 import io.netty.buffer.ByteBuf;
 
+import static com.pahimar.ee3.api.blacklist.BlacklistRegistryProxy.Blacklist;
+
 public class MessageSetBlacklistEntry implements IMessage, IMessageHandler<MessageSetBlacklistEntry, IMessage> {
 
+    public Blacklist blacklist;
+    public boolean isBlacklistAction;
+    public WrappedStack wrappedStack;
+
     public MessageSetBlacklistEntry() {
     }
 
+    public MessageSetBlacklistEntry(Object object, Blacklist blacklist, boolean isBlacklistAction) {
+
+        if (WrappedStack.canBeWrapped(object)) {
+            this.wrappedStack = WrappedStack.wrap(object, 1);
+        }
+        else {
+            wrappedStack = null;
+        }
+        this.blacklist = blacklist;
+        this.isBlacklistAction = isBlacklistAction;
+    }
+
     @Override
     public void fromBytes(ByteBuf buf) {
+
+        int blacklistOrdinal = buf.readInt();
+
+        if (blacklistOrdinal >= 0) {
+
+            if (blacklistOrdinal == 0) {
+                blacklist = Blacklist.KNOWLEDGE;
+            }
+            else if (blacklistOrdinal == 1) {
+                blacklist = Blacklist.EXCHANGE;
+            }
+            else {
+                blacklist = null;
+            }
+
+            if (blacklist != null) {
+
+                isBlacklistAction = buf.readBoolean();
+                int compressedJsonLength = buf.readInt();
+
+                if (compressedJsonLength != 0) {
+
+                    byte[] compressedWrappedStack = buf.readBytes(compressedJsonLength).array();
+
+                    if (compressedWrappedStack != null) {
+
+                        String jsonWrappedStack = CompressionHelper.decompress(compressedWrappedStack);
+
+                        try {
+                            wrappedStack = SerializationHelper.GSON.fromJson(jsonWrappedStack, WrappedStack.class);
+                        }
+                        catch (JsonParseException e) {
+                            LogHelper.warn("Failed to receive {} blacklist data from server", blacklist);
+                            wrappedStack = null;
+                        }
+                    }
+                    else {
+                        wrappedStack = null;
+                    }
+                }
+                else {
+                    wrappedStack = null;
+                }
+            }
+        }
+        else {
+            blacklist = null;
+            isBlacklistAction = false;
+            wrappedStack = null;
+        }
     }
 
     @Override
     public void toBytes(ByteBuf buf) {
+
+        if (blacklist != null) {
+
+            buf.writeBoolean(isBlacklistAction);
+
+            if (wrappedStack != null && wrappedStack.getWrappedObject() != null) {
+
+                byte[] compressedWrappedStack = CompressionHelper.compress(SerializationHelper.GSON.toJson(wrappedStack));
+                buf.writeInt(compressedWrappedStack.length);
+                buf.writeBytes(compressedWrappedStack);
+            }
+            else {
+                buf.writeInt(0);
+            }
+        }
+        else {
+            buf.writeInt(-1);
+        }
     }
 
     @Override
     public IMessage onMessage(MessageSetBlacklistEntry message, MessageContext ctx) {
 
+        if (message.blacklist != null && message.wrappedStack != null) {
+
+            if (message.isBlacklistAction) {
+                BlacklistRegistryProxy.addToBlacklist(message.wrappedStack, message.blacklist);
+                BlacklistRegistry.INSTANCE.setShouldSave(false);
+            }
+            else {
+                BlacklistRegistryProxy.removeFromBlacklist(message.wrappedStack, message.blacklist);
+                BlacklistRegistry.INSTANCE.setShouldSave(false);
+            }
+        }
+
         return null;
     }
 }