diff --git a/README.md b/README.md
index c0a784a97..a9275bdb6 100644
--- a/README.md
+++ b/README.md
@@ -185,6 +185,7 @@ export default App;
 |**launcherCloseLabel**|string|NO|'Close chat'|Alt value for the laucher when open|
 |**sendButtonAlt**|string|NO|'Send'|Send button alt for a11y purposes|
 |**handleTextInputChange**|(event) => any|NO| |Prop that triggers on input change|
+|**handleSubmit**|(event) => any|NO| |Prop that triggers when a message is submitted, used for custom validation|
 
 #### Styles
 
diff --git a/dev/App.tsx b/dev/App.tsx
index 22c2989aa..1976c8c8c 100644
--- a/dev/App.tsx
+++ b/dev/App.tsx
@@ -1,6 +1,7 @@
 import React, { Component } from 'react';
 
 import { Widget, addResponseMessage, setQuickButtons, toggleMsgLoader, addLinkSnippet } from '../index';
+import { addUserMessage } from '..';
 
 export default class App extends Component {
   componentDidMount() {
@@ -25,6 +26,14 @@ export default class App extends Component {
     setQuickButtons([]);
   }
 
+  handleSubmit = (msgText: string) => {
+    if(msgText.length < 80) {
+      addUserMessage("Uh oh, please write a bit more.");
+      return false;
+    }
+    return true;
+  }
+
   render() {
     return (
       <Widget
@@ -33,6 +42,7 @@ export default class App extends Component {
         senderPlaceHolder="Escribe aquí ..."
         handleNewUserMessage={this.handleNewUserMessage}
         handleQuickButtonClicked={this.handleQuickButtonClicked}
+        handleSubmit={this.handleSubmit}
       />
     );
   }
diff --git a/index.js b/index.js
index 2a9575f52..45ef84c20 100644
--- a/index.js
+++ b/index.js
@@ -12,7 +12,7 @@ import {
   setQuickButtons,
   deleteMessages,
   markAllAsRead,
-  setBadgeCount
+  setBadgeCount,
 } from './src/store/dispatcher';
 
 export {
diff --git a/package-lock.json b/package-lock.json
index 22615a370..87f47fa7f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "react-chat-widget",
-  "version": "3.0.0-beta",
+  "version": "3.0.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -10976,7 +10976,8 @@
     },
     "js-yaml": {
       "version": "3.7.0",
-      "resolved": "",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.7.0.tgz",
+      "integrity": "sha1-XJZ93YN6m/3KXy3oQlOr6KHAO4A=",
       "dev": true,
       "requires": {
         "argparse": "^1.0.7",
@@ -15514,6 +15515,7 @@
       "version": "16.13.1",
       "resolved": "https://registry.npmjs.org/react/-/react-16.13.1.tgz",
       "integrity": "sha512-YMZQQq32xHLX0bz5Mnibv1/LHb3Sqzngu7xstSM+vrkE5Kzr9xE0yMByK5kMoTK30YVJE61WfbxIFFvfeDKT1w==",
+      "dev": true,
       "requires": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1",
@@ -15524,6 +15526,7 @@
       "version": "16.13.1",
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-16.13.1.tgz",
       "integrity": "sha512-81PIMmVLnCNLO/fFOQxdQkvEq/+Hfpv24XNJfpyZhTRfO0QcmQIF/PgCa1zCOj2w1hrn12MFLyaJ/G0+Mxtfag==",
+      "dev": true,
       "requires": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1",
@@ -16345,6 +16348,7 @@
       "version": "0.19.1",
       "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.19.1.tgz",
       "integrity": "sha512-n/zwRWRYSUj0/3g/otKDRPMh6qv2SYMWNq85IEa8iZyAv8od9zDYpGSnpBEjNgcMNq6Scbu5KfIPxNF72R/2EA==",
+      "dev": true,
       "requires": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1"
diff --git a/package.json b/package.json
index 0e05c309c..27fd70805 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-chat-widget",
-  "version": "3.0.2",
+  "version": "3.0.3",
   "description": "Chat web widget for React apps",
   "main": "lib/index.js",
   "repository": "git@github.com:Wolox/react-chat-widget.git",
diff --git a/src/components/Widget/index.tsx b/src/components/Widget/index.tsx
index 6aba111de..c290bc6a5 100644
--- a/src/components/Widget/index.tsx
+++ b/src/components/Widget/index.tsx
@@ -24,6 +24,7 @@ type Props = {
   launcherCloseLabel: string;
   sendButtonAlt: string;
   showTimeStamp: boolean;
+  handleSubmit?: AnyFunction;
 }
 
 function Widget({
@@ -43,7 +44,8 @@ function Widget({
   launcherOpenLabel,
   launcherCloseLabel,
   sendButtonAlt,
-  showTimeStamp
+  showTimeStamp,
+  handleSubmit
 }: Props) {
   const dispatch = useDispatch();
 
@@ -54,11 +56,16 @@ function Widget({
   const handleMessageSubmit = (event) => {
     event.preventDefault();
     const userInput = event.target.message.value;
-    if (userInput.trim()) {
+    
+    if (!userInput.trim()) {      
+      return;      
+    }
+
+    if(typeof handleSubmit === 'function' && handleSubmit(userInput)) {
       dispatch(addUserMessage(userInput));
       handleNewUserMessage(userInput);
-    }
-    event.target.message.value = '';
+      event.target.message.value = '';
+    }    
   }
 
   const onQuickButtonClicked = (event, value) => {
diff --git a/src/index.tsx b/src/index.tsx
index e2989e2d6..2a54d2b64 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -25,6 +25,7 @@ type Props = {
   launcherCloseLabel?: string,
   sendButtonAlt?: string;
   showTimeStamp?: boolean;
+  handleSubmit?: AnyFunction;
 } & typeof defaultProps;
 
 function ConnectedWidget({
@@ -44,7 +45,8 @@ function ConnectedWidget({
   launcherOpenLabel,
   launcherCloseLabel,
   sendButtonAlt,
-  showTimeStamp
+  showTimeStamp,
+  handleSubmit
 }: Props) {
   return (
     <Provider store={store}>
@@ -66,6 +68,7 @@ function ConnectedWidget({
         launcherCloseLabel={launcherCloseLabel}
         sendButtonAlt={sendButtonAlt}
         showTimeStamp={showTimeStamp}
+        handleSubmit={handleSubmit}
       />
     </Provider>
   );