diff --git a/dist/index.js b/dist/index.js
index e3882af6..6539eb70 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -346,6 +346,9 @@
     messages(id) {
       return id + "messages";
     },
+    outbox(id) {
+      return id + "outbox";
+    },
     composingMessage(id) {
       return id + "composing-message";
     }
@@ -360,6 +363,8 @@
     secondaryChannels;
     encryptionKey;
     messages;
+    outbox;
+    isOutBoxEmpty;
     composingMessage;
     primaryChannelInput;
     newSecondaryChannelName;
@@ -385,6 +390,11 @@
       );
       this.encryptionKey = restoreState(storageKeys.encyptionKey(id), "");
       this.messages = restoreListState(storageKeys.messages(id));
+      this.outbox = restoreListState(storageKeys.outbox(id));
+      this.isOutBoxEmpty = createProxyState(
+        [this.outbox],
+        () => this.outbox.value.size == 0
+      );
       this.composingMessage = restoreState(
         storageKeys.composingMessage(id),
         ""
@@ -392,18 +402,12 @@
       this.newSecondaryChannelName = new State("");
       this.primaryChannelInput = new State(this.primaryChannel.value);
       this.cannotSendMessage = createProxyState(
-        [
-          this.primaryChannel,
-          this.composingMessage,
-          this.isSubscribed,
-          isConnected,
-          senderName
-        ],
-        () => this.primaryChannel.value == "" || this.composingMessage.value == "" || senderName.value == "" || this.isSubscribed.value == false || isConnected.value == false
+        [this.primaryChannel, this.composingMessage, senderName],
+        () => this.primaryChannel.value == "" || this.composingMessage.value == "" || senderName.value == ""
       );
       this.cannotResendMessage = createProxyState(
-        [this.primaryChannel, this.isSubscribed, isConnected, senderName],
-        () => this.primaryChannel.value == "" || senderName.value == "" || this.isSubscribed.value == false || isConnected.value == false
+        [this.primaryChannel, senderName],
+        () => this.primaryChannel.value == "" || senderName.value == ""
       );
       this.cannotAddSecondaryChannel = createProxyState(
         [this.newSecondaryChannelName],
@@ -447,6 +451,9 @@
     };
     handleSubscription = (isSubscribed) => {
       this.isSubscribed.value = isSubscribed;
+      if (isSubscribed == true) {
+        this.sendMessagesInOutbox();
+      }
     };
     handleMessage = (chatMessage) => {
       this.messages.add(chatMessage);
@@ -455,14 +462,15 @@
     // messages
     sendNewMessage = async () => {
       if (this.cannotSendMessage.value == true) return;
-      this.sendMessageText(this.composingMessage.value);
+      const message = await this.createMessage(this.composingMessage.value);
+      this.sendExistingMessage(message);
       this.composingMessage.value = "";
     };
     resendMessage = (message) => {
       if (this.cannotResendMessage.value == true) return;
-      this.sendMessageText(message.body);
+      this.sendExistingMessage(message);
     };
-    sendMessageText = async (messageText) => {
+    createMessage = async (messageText) => {
       const secondaryChannelNames = [
         ...this.secondaryChannels.value.values()
       ];
@@ -472,14 +480,26 @@
       ];
       const encrypted = this.encryptionKey.value == "" ? messageText : await encryptString(messageText, this.encryptionKey.value);
       const joinedChannelName = allChannelNames.join("/");
-      const messageObject = {
+      return {
         channel: joinedChannelName,
         sender: senderName.value,
         body: encrypted,
         isoDate: (/* @__PURE__ */ new Date()).toISOString()
       };
-      const messageString = JSON.stringify(messageObject);
-      UDN.sendMessage(joinedChannelName, messageString);
+    };
+    sendExistingMessage = async (chatMessage) => {
+      if (isConnected.value == true && this.isSubscribed.value == true) {
+        const messageString = JSON.stringify(chatMessage);
+        UDN.sendMessage(chatMessage.channel, messageString);
+      } else {
+        this.outbox.add(chatMessage);
+      }
+    };
+    sendMessagesInOutbox = () => {
+      this.outbox.value.forEach((message) => {
+        this.sendExistingMessage(message);
+        this.outbox.remove(message);
+      });
     };
     clearMessages = () => {
       this.messages.clear();
@@ -487,6 +507,9 @@
     deleteMessage = (message) => {
       this.messages.remove(message);
     };
+    deleteOutboxMessage = (message) => {
+      this.outbox.remove(message);
+    };
     decryptReceivedMessage = async (message) => {
       message.body = await decryptString(message.body, this.encryptionKey.value);
       this.messages.callSubscriptions();
@@ -790,6 +813,7 @@
     showKey: "Show key",
     removeChat: "Remove chat",
     clearChatMessages: "Clear chat messages",
+    messageInOutbox: "Pending",
     noChatSelected: "No chat selected",
     composerPlaceholder: "Type a message...",
     sendMessage: "Send",
@@ -838,6 +862,7 @@
       removeChat: "Eliminar chat",
       clearChatMessages: "Eliminar todos mensajes",
       noChatSelected: "Selecciona un chat",
+      messageInOutbox: "Pendiente",
       composerPlaceholder: "Escribe un mensaje...",
       sendMessage: "Enviar",
       resendMessage: "Enviar de nuevo",
@@ -883,6 +908,7 @@
       removeChat: "Chat l\xF6schen",
       clearChatMessages: "Nachrichtenverlauf leeren",
       noChatSelected: "Kein Chat ausgew\xE4hlt",
+      messageInOutbox: "Ausstehend",
       composerPlaceholder: "Neue Nachricht...",
       sendMessage: "Senden",
       resendMessage: "Erneut senden",
@@ -1058,20 +1084,36 @@
         /* @__PURE__ */ createElement("span", { class: "icon" }, "key")
       ), /* @__PURE__ */ createElement("button", { "aria-label": translation.deleteMessage, "on:click": remove }, /* @__PURE__ */ createElement("span", { class: "icon" }, "delete")))), /* @__PURE__ */ createElement("div", { class: "flex-column padding-h padding-bottom" }, /* @__PURE__ */ createElement("b", { class: "break-word", "subscribe:innerText": messageBody }), /* @__PURE__ */ createElement("span", { class: "secondary" }, /* @__PURE__ */ createElement("b", null, new Date(message.isoDate).toLocaleString()), /* @__PURE__ */ createElement("br", null), message.channel))));
     };
-    const listElement = /* @__PURE__ */ createElement(
+    const outboxMessageConverter = (message) => {
+      function remove() {
+        chat.deleteOutboxMessage(message);
+      }
+      return /* @__PURE__ */ createElement("div", { class: "tile width-100 flex-no padding-0" }, /* @__PURE__ */ createElement("div", { class: "flex-column" }, /* @__PURE__ */ createElement("div", { class: "flex-row justify-apart align-center" }, /* @__PURE__ */ createElement("b", { class: "error padding-h" }, translation.messageInOutbox), /* @__PURE__ */ createElement("span", { class: "flex-row secondary" }, /* @__PURE__ */ createElement("button", { "aria-label": translation.deleteMessage, "on:click": remove }, /* @__PURE__ */ createElement("span", { class: "icon" }, "delete")))), /* @__PURE__ */ createElement("div", { class: "flex-column padding-h padding-bottom" }, /* @__PURE__ */ createElement("b", { class: "break-word" }, message.body), /* @__PURE__ */ createElement("span", { class: "secondary" }, /* @__PURE__ */ createElement("b", null, new Date(message.isoDate).toLocaleString()), /* @__PURE__ */ createElement("br", null), message.channel))));
+    };
+    const messageList = /* @__PURE__ */ createElement(
       "div",
       {
         class: "flex-column gap",
         "children:append": [chat.messages, messageConverter]
       }
     );
-    chat.messages.handleAddition(() => {
-      const scrollFromBottom = listElement.scrollHeight - (listElement.scrollTop + listElement.offsetHeight);
+    const outboxList = /* @__PURE__ */ createElement(
+      "div",
+      {
+        class: "flex-column gap",
+        "children:append": [chat.outbox, outboxMessageConverter]
+      }
+    );
+    const listWrapper = /* @__PURE__ */ createElement("div", { class: "flex-column gap" }, messageList, outboxList);
+    function scrollToBottom() {
+      const scrollFromBottom = listWrapper.scrollHeight - (listWrapper.scrollTop + listWrapper.offsetHeight);
       if (scrollFromBottom > 400) return;
-      listElement.scrollTop = listElement.scrollHeight;
-    });
-    setTimeout(() => listElement.scrollTop = listElement.scrollHeight, 50);
-    return listElement;
+      listWrapper.scrollTop = listWrapper.scrollHeight;
+    }
+    chat.messages.handleAddition(scrollToBottom);
+    chat.outbox.handleAddition(scrollToBottom);
+    setTimeout(() => listWrapper.scrollTop = listWrapper.scrollHeight, 50);
+    return listWrapper;
   }
 
   // src/Tabs/messageTab.tsx
diff --git a/src/Model/chatModel.ts b/src/Model/chatModel.ts
index 9526fe4b..6fc7f49c 100644
--- a/src/Model/chatModel.ts
+++ b/src/Model/chatModel.ts
@@ -34,6 +34,8 @@ export class Chat {
 
   encryptionKey: React.State<string>;
   messages: React.ListState<ChatMessage>;
+  outbox: React.ListState<ChatMessage>;
+  isOutBoxEmpty: React.State<boolean>;
 
   composingMessage: React.State<string>;
   primaryChannelInput: React.State<string>;
@@ -66,6 +68,11 @@ export class Chat {
     );
     this.encryptionKey = React.restoreState(storageKeys.encyptionKey(id), "");
     this.messages = React.restoreListState(storageKeys.messages(id));
+    this.outbox = React.restoreListState(storageKeys.outbox(id));
+    this.isOutBoxEmpty = React.createProxyState(
+      [this.outbox],
+      () => this.outbox.value.size == 0
+    );
 
     // inputs
     this.composingMessage = React.restoreState(
@@ -77,27 +84,15 @@ export class Chat {
 
     // guards
     this.cannotSendMessage = React.createProxyState(
-      [
-        this.primaryChannel,
-        this.composingMessage,
-        this.isSubscribed,
-        isConnected,
-        senderName,
-      ],
+      [this.primaryChannel, this.composingMessage, senderName],
       () =>
         this.primaryChannel.value == "" ||
         this.composingMessage.value == "" ||
-        senderName.value == "" ||
-        this.isSubscribed.value == false ||
-        isConnected.value == false
+        senderName.value == ""
     );
     this.cannotResendMessage = React.createProxyState(
-      [this.primaryChannel, this.isSubscribed, isConnected, senderName],
-      () =>
-        this.primaryChannel.value == "" ||
-        senderName.value == "" ||
-        this.isSubscribed.value == false ||
-        isConnected.value == false
+      [this.primaryChannel, senderName],
+      () => this.primaryChannel.value == "" || senderName.value == ""
     );
     this.cannotAddSecondaryChannel = React.createProxyState(
       [this.newSecondaryChannelName],
@@ -149,6 +144,10 @@ export class Chat {
 
   handleSubscription = (isSubscribed: boolean): void => {
     this.isSubscribed.value = isSubscribed;
+
+    if (isSubscribed == true) {
+      this.sendMessagesInOutbox();
+    }
   };
 
   handleMessage = (chatMessage: ChatMessage): void => {
@@ -160,16 +159,17 @@ export class Chat {
   sendNewMessage = async (): Promise<void> => {
     if (this.cannotSendMessage.value == true) return;
 
-    this.sendMessageText(this.composingMessage.value);
+    const message = await this.createMessage(this.composingMessage.value);
+    this.sendExistingMessage(message);
     this.composingMessage.value = "";
   };
 
   resendMessage = (message: ChatMessage) => {
     if (this.cannotResendMessage.value == true) return;
-    this.sendMessageText(message.body);
+    this.sendExistingMessage(message);
   };
 
-  sendMessageText = async (messageText: string): Promise<void> => {
+  createMessage = async (messageText: string): Promise<ChatMessage> => {
     // get channels
     const secondaryChannelNames: string[] = [
       ...this.secondaryChannels.value.values(),
@@ -187,16 +187,28 @@ export class Chat {
 
     // create object
     const joinedChannelName = allChannelNames.join("/");
-    const messageObject: ChatMessage = {
+    return {
       channel: joinedChannelName,
       sender: senderName.value,
       body: encrypted,
       isoDate: new Date().toISOString(),
     };
-    const messageString = JSON.stringify(messageObject);
+  };
 
-    // send
-    UDN.sendMessage(joinedChannelName, messageString);
+  sendExistingMessage = async (chatMessage: ChatMessage): Promise<void> => {
+    if (isConnected.value == true && this.isSubscribed.value == true) {
+      const messageString = JSON.stringify(chatMessage);
+      UDN.sendMessage(chatMessage.channel, messageString);
+    } else {
+      this.outbox.add(chatMessage);
+    }
+  };
+
+  sendMessagesInOutbox = () => {
+    this.outbox.value.forEach((message) => {
+      this.sendExistingMessage(message)
+      this.outbox.remove(message);
+    });
   };
 
   clearMessages = (): void => {
@@ -207,6 +219,10 @@ export class Chat {
     this.messages.remove(message);
   };
 
+  deleteOutboxMessage = (message: ChatMessage): void => {
+    this.outbox.remove(message);
+  };
+
   decryptReceivedMessage = async (message: ChatMessage): Promise<void> => {
     message.body = await decryptString(message.body, this.encryptionKey.value);
     this.messages.callSubscriptions();
diff --git a/src/Views/threadView.tsx b/src/Views/threadView.tsx
index 76413772..770ec83a 100644
--- a/src/Views/threadView.tsx
+++ b/src/Views/threadView.tsx
@@ -72,20 +72,68 @@ export function ThreadView(chat: Chat) {
     );
   };
 
-  const listElement = (
+  const outboxMessageConverter: React.ListItemConverter<ChatMessage> = (
+    message
+  ) => {
+    function remove() {
+      chat.deleteOutboxMessage(message);
+    }
+
+    return (
+      <div class="tile width-100 flex-no padding-0">
+        <div class="flex-column">
+          <div class="flex-row justify-apart align-center">
+            <b class="error padding-h">{translation.messageInOutbox}</b>
+            <span class="flex-row secondary">
+              <button aria-label={translation.deleteMessage} on:click={remove}>
+                <span class="icon">delete</span>
+              </button>
+            </span>
+          </div>
+          <div class="flex-column padding-h padding-bottom">
+            <b class="break-word">{message.body}</b>
+            <span class="secondary">
+              <b>{new Date(message.isoDate).toLocaleString()}</b>
+              <br></br>
+              {message.channel}
+            </span>
+          </div>
+        </div>
+      </div>
+    );
+  };
+
+  const messageList = (
     <div
       class="flex-column gap"
       children:append={[chat.messages, messageConverter]}
     ></div>
   );
-  chat.messages.handleAddition(() => {
+  const outboxList = (
+    <div
+      class="flex-column gap"
+      children:append={[chat.outbox, outboxMessageConverter]}
+    ></div>
+  );
+  const listWrapper = (
+    <div class="flex-column gap">
+      {messageList}
+      {outboxList}
+    </div>
+  );
+
+  function scrollToBottom() {
     const scrollFromBottom =
-      listElement.scrollHeight -
-      (listElement.scrollTop + listElement.offsetHeight);
+      listWrapper.scrollHeight -
+      (listWrapper.scrollTop + listWrapper.offsetHeight);
     if (scrollFromBottom > 400) return;
 
-    listElement.scrollTop = listElement.scrollHeight;
-  });
-  setTimeout(() => (listElement.scrollTop = listElement.scrollHeight), 50);
-  return listElement;
+    listWrapper.scrollTop = listWrapper.scrollHeight;
+  }
+
+  chat.messages.handleAddition(scrollToBottom);
+  chat.outbox.handleAddition(scrollToBottom);
+  setTimeout(() => (listWrapper.scrollTop = listWrapper.scrollHeight), 50);
+
+  return listWrapper;
 }
diff --git a/src/translations.ts b/src/translations.ts
index 4d9eb333..416fea28 100644
--- a/src/translations.ts
+++ b/src/translations.ts
@@ -50,6 +50,8 @@ const englishTranslations = {
   removeChat: "Remove chat",
   clearChatMessages: "Clear chat messages",
 
+  messageInOutbox: "Pending",
+
   noChatSelected: "No chat selected",
 
   composerPlaceholder: "Type a message...",
@@ -117,6 +119,8 @@ const allTranslations: { [key: string]: typeof englishTranslations } = {
 
     noChatSelected: "Selecciona un chat",
 
+    messageInOutbox: "Pendiente",
+
     composerPlaceholder: "Escribe un mensaje...",
     sendMessage: "Enviar",
 
@@ -179,6 +183,8 @@ const allTranslations: { [key: string]: typeof englishTranslations } = {
 
     noChatSelected: "Kein Chat ausgewählt",
 
+    messageInOutbox: "Ausstehend",
+
     composerPlaceholder: "Neue Nachricht...",
     sendMessage: "Senden",
 
diff --git a/src/utility.ts b/src/utility.ts
index c9d00706..a9587c1a 100644
--- a/src/utility.ts
+++ b/src/utility.ts
@@ -19,6 +19,10 @@ export const storageKeys = {
     return id + "messages";
   },
 
+  outbox(id: string): string {
+    return id + "outbox";
+  },
+
   composingMessage(id: string): string {
     return id + "composing-message";
   },