diff --git a/Events/Event.java b/Events/Event.java
new file mode 100644
index 0000000..e744bda
--- /dev/null
+++ b/Events/Event.java
@@ -0,0 +1,18 @@
+package Events;
+
+
+import game.User;
+
+public abstract class Event {
+
+    private User user;
+    private String message;
+
+    public String getMessage() {
+        return message;
+    }
+
+    public User getUser() {
+        return user;
+    }
+}
diff --git a/Events/EventBus.java b/Events/EventBus.java
new file mode 100644
index 0000000..6f348d9
--- /dev/null
+++ b/Events/EventBus.java
@@ -0,0 +1,21 @@
+package Events;
+
+import java.util.List;
+
+public class EventBus {
+    List<Event> events;
+    List<Subscriber> subscriber;
+
+    public List<Event> getEvents() {
+        return events;
+    }
+
+    public void addEvents(Event event) {
+        this.events.add(event);
+    }
+
+    public void setSubscriber(Subscriber subscriber) {
+        this.subscriber.add(subscriber);
+    }
+
+}
diff --git a/Events/Subscriber.java b/Events/Subscriber.java
new file mode 100644
index 0000000..64ad308
--- /dev/null
+++ b/Events/Subscriber.java
@@ -0,0 +1,9 @@
+package Events;
+
+import java.util.function.Function;
+
+public class Subscriber {
+
+    Subscriber(Function<Event,Void> function){
+    }
+}
diff --git a/Events/WinEvent.java b/Events/WinEvent.java
new file mode 100644
index 0000000..5f0abb6
--- /dev/null
+++ b/Events/WinEvent.java
@@ -0,0 +1,5 @@
+package Events;
+
+public class WinEvent extends Event{
+
+}
diff --git a/Main.java b/Main.java
index f0d48b7..332bdc4 100644
--- a/Main.java
+++ b/Main.java
@@ -1,8 +1,10 @@
-import api.AIEngine;
-import api.GameEngine;
-import api.RuleEngine;
+import Service.EmailService;
+import Service.SMSService;
+import api.*;
 import boards.History;
 import boards.TicTacToeBoard;
+import commands.builder.EmailCommandBuilder;
+import commands.builder.SMSCommandBuilder;
 import game.Board;
 import game.Cell;
 import game.Move;
@@ -10,6 +12,8 @@
 
 import java.util.Scanner;
 
+import static java.util.concurrent.TimeUnit.DAYS;
+
 public class Main {
 
     public static void main(String[] args) {
@@ -19,10 +23,14 @@ public static void main(String[] args) {
         RuleEngine ruleEngine = new RuleEngine();
         Board board = gameEngine.start("TicTacToe");
         Scanner scanner = new Scanner(System.in);
+        Player computer = new Player("O");
+        Player opponent = new Player("X");
+        if(opponent.getUser().activeAfter(1,DAYS)){
+            EmailService emailService = new EmailService();
+            emailService.execute(new EmailCommandBuilder().user(opponent.getUser()).message("Glad, you are back").build());
+        }
         while(!ruleEngine.getState(board).isOver()){
             System.out.println("Make your Move");
-            Player computer = new Player("O");
-            Player opponent = new Player("X");
             int row = scanner.nextInt();
             int col = scanner.nextInt();
             Move opponentMove = new Move(opponent,new Cell(row,col));
@@ -38,6 +46,14 @@ public static void main(String[] args) {
             History boardHistory = board1.getHistory();
             boardHistory.printHistory();
         }
+        // Problem with below approach is that it is not extensible, if link support, image support is needed then we had to change everywhere
+        if(ruleEngine.getState(board).getWinner().equals(opponent.symbol())){
+            EmailService emailService = new EmailService();
+            emailService.execute(new EmailCommandBuilder().user(opponent.getUser()).message("Congratulations, you won the match").link("https://suii.com").build());
+
+            SMSService smsService = new SMSService();
+            smsService.execute(new SMSCommandBuilder().user(opponent.getUser()).message("Congratulations, you won the match").build());
+        }
         System.out.println("Game winner is " + ruleEngine.getState(board).getWinner());
     }
 
diff --git a/Service/EmailService.java b/Service/EmailService.java
new file mode 100644
index 0000000..28541dd
--- /dev/null
+++ b/Service/EmailService.java
@@ -0,0 +1,13 @@
+package Service;
+
+import commands.implementation.EmailCommand;
+import game.User;
+
+public class EmailService {
+    private void sendEmail(User user, String message){
+        System.out.println("sendEmail has been envoked");
+    }
+    public void execute(EmailCommand command){
+        sendEmail(command.getNotificationDetails().getReciever(),command.getNotificationDetails().getMessage());
+    }
+}
diff --git a/Service/SMSService.java b/Service/SMSService.java
new file mode 100644
index 0000000..68551f0
--- /dev/null
+++ b/Service/SMSService.java
@@ -0,0 +1,13 @@
+package Service;
+
+import commands.implementation.SMSCommand;
+import game.User;
+
+public class SMSService {
+    private void sendSMS(User user, String message){
+        System.out.println("sendEmail has been envoked");
+    }
+    public void execute(SMSCommand command){
+        sendSMS(command.getNotificationDetails().getReciever(),command.getNotificationDetails().getMessage());
+    }
+}
\ No newline at end of file
diff --git a/commands/builder/EmailCommandBuilder.java b/commands/builder/EmailCommandBuilder.java
new file mode 100644
index 0000000..eaecf85
--- /dev/null
+++ b/commands/builder/EmailCommandBuilder.java
@@ -0,0 +1,37 @@
+package commands.builder;
+
+
+import commands.implementation.EmailCommand;
+import game.User;
+
+public class EmailCommandBuilder {
+    NotificationBuilder notificationBuilder;
+    String link;
+    String templateId;
+    String tempalate;
+
+
+    public EmailCommandBuilder link(String link){
+        this.link = link;
+        return this;
+    }
+    public EmailCommandBuilder templateId(String templateId){
+        this.templateId = templateId;
+        return this;
+    }
+    public EmailCommandBuilder user(User user){
+        this.notificationBuilder.user(user);
+        return this;
+    }
+    public EmailCommandBuilder message(String message){
+        this.notificationBuilder.message(message);
+        return this;
+    }
+    public EmailCommandBuilder template(String template){
+        this.tempalate = template;
+        return this;
+    }
+    public EmailCommand build(){
+        return new EmailCommand(notificationBuilder.build());
+    }
+}
diff --git a/commands/builder/NotificationBuilder.java b/commands/builder/NotificationBuilder.java
new file mode 100644
index 0000000..9c24878
--- /dev/null
+++ b/commands/builder/NotificationBuilder.java
@@ -0,0 +1,22 @@
+package commands.builder;
+
+import commands.implementation.NotificationDetails;
+import game.User;
+
+public class NotificationBuilder {
+
+    User user;
+    String message;
+
+    public NotificationBuilder user(User user){
+        this.user = user;
+        return this;
+    }
+    public NotificationBuilder message(String message){
+        this.message = message;
+        return this;
+    }
+    public NotificationDetails build(){
+        return  new NotificationDetails(user,message);
+    }
+}
diff --git a/commands/builder/SMSCommandBuilder.java b/commands/builder/SMSCommandBuilder.java
new file mode 100644
index 0000000..c32b76b
--- /dev/null
+++ b/commands/builder/SMSCommandBuilder.java
@@ -0,0 +1,32 @@
+package commands.builder;
+
+import commands.implementation.SMSCommand;
+import game.User;
+
+
+public class SMSCommandBuilder {
+    NotificationBuilder notificationBuilder;
+    String templateId;
+    String template;
+
+    public SMSCommandBuilder templateId(String templateId){
+        this.templateId = templateId;
+        return this;
+    }
+    public SMSCommandBuilder template(String template){
+        this.template = template;
+        return this;
+    }
+    public SMSCommandBuilder user(User user){
+        this.notificationBuilder.user(user);
+        return this;
+    }
+    public SMSCommandBuilder message(String message){
+        this.notificationBuilder.message(message);
+        return this;
+    }
+    public SMSCommand build(){
+        return new SMSCommand(notificationBuilder.build());
+    }
+
+}
diff --git a/commands/implementation/EmailCommand.java b/commands/implementation/EmailCommand.java
new file mode 100644
index 0000000..891bff7
--- /dev/null
+++ b/commands/implementation/EmailCommand.java
@@ -0,0 +1,18 @@
+package commands.implementation;
+
+import game.User;
+
+public class EmailCommand {
+    NotificationDetails notificationDetails;
+    String link;
+    String templateId;
+    String template;
+
+    public EmailCommand(NotificationDetails notificationDetails){
+       notificationDetails = new NotificationDetails(notificationDetails.getReciever(),notificationDetails.getMessage());
+    }
+
+    public NotificationDetails getNotificationDetails() {
+        return notificationDetails;
+    }
+}
diff --git a/commands/implementation/NotificationDetails.java b/commands/implementation/NotificationDetails.java
new file mode 100644
index 0000000..723d6ae
--- /dev/null
+++ b/commands/implementation/NotificationDetails.java
@@ -0,0 +1,22 @@
+package commands.implementation;
+
+import game.User;
+
+public class NotificationDetails {
+
+    User reciever;
+    String message;
+
+    public User getReciever() {
+        return reciever;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public NotificationDetails(User reciever, String message){
+        this.reciever = reciever;
+        this.message = message;
+    }
+}
diff --git a/commands/implementation/SMSCommand.java b/commands/implementation/SMSCommand.java
new file mode 100644
index 0000000..7bdc046
--- /dev/null
+++ b/commands/implementation/SMSCommand.java
@@ -0,0 +1,17 @@
+package commands.implementation;
+
+import game.User;
+
+public class SMSCommand {
+    NotificationDetails notificationDetails;
+    String templateId;
+    String template;
+
+    public SMSCommand(NotificationDetails notificationDetails){
+        notificationDetails = new NotificationDetails(notificationDetails.getReciever(),notificationDetails.getMessage());
+    }
+
+    public NotificationDetails getNotificationDetails() {
+        return notificationDetails;
+    }
+}
diff --git a/game/Player.java b/game/Player.java
index 101b3cc..b6599c8 100644
--- a/game/Player.java
+++ b/game/Player.java
@@ -2,8 +2,10 @@
 
 public class Player {
     private final String playerSymbol;
+    private User user;
     public Player(String playerSymbol){
         this.playerSymbol=playerSymbol;
+        this.user = new User();
     }
     public String symbol(){
         return playerSymbol;
@@ -11,4 +13,7 @@ public String symbol(){
     public Player flip(){
         return new Player(playerSymbol.equals("X") ? "O":"X");
     }
+    public User getUser() {
+        return user;
+    }
 }
diff --git a/game/User.java b/game/User.java
new file mode 100644
index 0000000..88717d3
--- /dev/null
+++ b/game/User.java
@@ -0,0 +1,12 @@
+package game;
+
+import java.util.concurrent.TimeUnit;
+
+public class User {
+    int id;
+    long lastActiveTime;
+
+    public  boolean activeAfter(int threshold, TimeUnit timeUnit){
+        return System.currentTimeMillis()-lastActiveTime>timeUnit.toMillis(threshold);
+    }
+}