diff --git a/app/javascript/dashboard/components/widgets/WootWriter/Editor.vue b/app/javascript/dashboard/components/widgets/WootWriter/Editor.vue
index 8248c0003..b2875bc18 100644
--- a/app/javascript/dashboard/components/widgets/WootWriter/Editor.vue
+++ b/app/javascript/dashboard/components/widgets/WootWriter/Editor.vue
@@ -86,6 +86,7 @@ const props = defineProps({
   // are triggered except when this flag is true
   allowSignature: { type: Boolean, default: false },
   channelType: { type: String, default: '' },
+  forceSignature: { type: Boolean, default: false },
   medium: { type: String, default: '' },
   showImageResizeToolbar: { type: Boolean, default: false }, // A kill switch to show or hide the image toolbar
   focusOnMount: { type: Boolean, default: true },
@@ -304,6 +305,10 @@ const plugins = computed(() => {
 const sendWithSignature = computed(() => {
   // this is considered the source of truth, we watch this property
   // on change, we toggle the signature in the editor
+  if (props.forceSignature && props.allowSignature && !props.isPrivate) {
+    return true;
+  }
+
   if (props.allowSignature && !props.isPrivate && props.channelType) {
     return fetchSignatureFlagFromUISettings(props.channelType);
   }
diff --git a/app/javascript/react-components/doc.md b/app/javascript/react-components/doc.md
index 334a61573..8fe6a20b4 100644
--- a/app/javascript/react-components/doc.md
+++ b/app/javascript/react-components/doc.md
@@ -134,6 +134,7 @@ interface ChatwootProviderProps {
   pubsubToken?: string;   // PubSub authentication token
   disableUpload?: boolean; // Disable file attachments
   disableEditor?: boolean; // Disable reply editor
+  signature?: string;      // Custom message signature (overrides user profile signature)
 }
 ```
 
@@ -147,6 +148,7 @@ window.__PUBSUB_TOKEN__       // Real-time auth token
 window.__WOOT_CONVERSATION_ID__ // Active conversation
 window.__EDITOR_DISABLE_UPLOAD__ // Upload flag
 window.__DISABLE_EDITOR__     // Editor flag
+window.__WOOT_CUSTOM_SIGNATURE__ // Custom signature (overrides profile)
 window.__WOOT_ISOLATED_SHELL__ // Disables audio notifications
 window.__CHATWOOT_STORE__     // Vuex store reference
 window.WootConstants          // Global constants
diff --git a/app/javascript/react-components/src/components/ChatwootProvider.jsx b/app/javascript/react-components/src/components/ChatwootProvider.jsx
index 90600889f..c28efbed2 100644
--- a/app/javascript/react-components/src/components/ChatwootProvider.jsx
+++ b/app/javascript/react-components/src/components/ChatwootProvider.jsx
@@ -18,6 +18,7 @@ export const ChatwootProvider = ({
   conversationId,
   disableUpload,
   disableEditor,
+  signature,
   children,
 }) => {
   const isInitialized = useRef(false);
@@ -41,6 +42,7 @@ export const ChatwootProvider = ({
     disableUpload: disableUpload || false,
     websocketURL: websocketURL,
     pubsubToken: pubsubToken,
+    signature: signature || '',
   };
 
   function initializeChatwootGlobals() {
@@ -57,6 +59,7 @@ export const ChatwootProvider = ({
     window.__WOOT_CONVERSATION_ID__ = config.conversationId;
     window.__EDITOR_DISABLE_UPLOAD__ = config.disableUpload;
     window.__DISABLE_EDITOR__ = config.disableEditor;
+    window.__WOOT_CUSTOM_SIGNATURE__ = config.signature || undefined;
     window.__WOOT_ISOLATED_SHELL__ = true;
     /* eslint-enable no-underscore-dangle */
 
@@ -87,6 +90,16 @@ export const ChatwootProvider = ({
     config.pubsubToken,
   ]);
 
+  // Keep signature global in sync when the prop changes after init
+  useEffect(() => {
+    const value = signature || undefined;
+    // eslint-disable-next-line no-underscore-dangle
+    window.__WOOT_CUSTOM_SIGNATURE__ = value;
+    window.dispatchEvent(
+      new CustomEvent('chatwoot:signature-change', { detail: value || '' })
+    );
+  }, [signature]);
+
   if (!initializationComplete) {
     return null;
   }
diff --git a/app/javascript/ui/LiteReplyBox.vue b/app/javascript/ui/LiteReplyBox.vue
index 2333b910c..5ca37d48b 100644
--- a/app/javascript/ui/LiteReplyBox.vue
+++ b/app/javascript/ui/LiteReplyBox.vue
@@ -38,6 +38,8 @@ export default {
       hasSlashCommand: false,
       doAutoSaveDraft: () => {},
       updateEditorSelectionWith: '',
+      // eslint-disable-next-line no-underscore-dangle
+      customSignatureValue: window.__WOOT_CUSTOM_SIGNATURE__ || '',
     };
   },
   computed: {
@@ -158,15 +160,26 @@ export default {
     editorStateId() {
       return `draft-${this.conversationId}-${this.replyType}`;
     },
+    customSignature() {
+      return this.customSignatureValue;
+    },
+    hasCustomSignature() {
+      return !!this.customSignature;
+    },
     signatureToApply() {
+      const signature = this.customSignature || this.messageSignature;
       return this.showRichContentEditor
-        ? this.messageSignature
-        : extractTextFromMarkdown(this.messageSignature);
+        ? signature
+        : extractTextFromMarkdown(signature);
     },
   },
   mounted() {
     document.addEventListener('paste', this.onPaste);
     document.addEventListener('keydown', this.handleKeyEvents);
+    window.addEventListener(
+      'chatwoot:signature-change',
+      this.onSignatureChange
+    );
 
     // // A hacky fix to solve the drag and drop
     // // Is showing on top of new conversation modal drag and drop
@@ -180,8 +193,15 @@ export default {
   unmounted() {
     document.removeEventListener('paste', this.onPaste);
     document.removeEventListener('keydown', this.handleKeyEvents);
+    window.removeEventListener(
+      'chatwoot:signature-change',
+      this.onSignatureChange
+    );
   },
   methods: {
+    onSignatureChange(event) {
+      this.customSignatureValue = event.detail || '';
+    },
     getElementToBind() {
       return this.replyEditor;
     },
@@ -404,6 +424,7 @@ export default {
         :variables="messageVariables"
         :signature="signatureToApply"
         allow-signature
+        :force-signature="hasCustomSignature"
         :channel-type="channelType"
         @typing-off="onTypingOff"
         @typing-on="onTypingOn"