diff --git a/Week05/emails_rafet_taskin.py b/Week05/emails_rafet_taskin.py
new file mode 100644
index 00000000..b5a4192f
--- /dev/null
+++ b/Week05/emails_rafet_taskin.py
@@ -0,0 +1,31 @@
+import re
+
+class Emails(list):
+    def __init__(self, emails):
+        unique_emails = []
+        if emails:
+            seen = set()
+            for email in emails:
+                if email not in seen:
+                    unique_emails.append(email)
+                    seen.add(email)
+        
+        super().__init__(unique_emails)
+        self.data = self
+    
+        self.validate()
+
+    def validate(self):
+        email_pattern = re.compile(r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$') # good enough regex
+        for email in self:
+            if not isinstance(email, str):
+                raise ValueError("Emails must be strings")
+            
+            if not email_pattern.match(email):
+                raise ValueError(f"Invalid email address: {email}")
+
+    def __repr__(self):
+        return f"Emails({super().__repr__()})"
+
+    def __str__(self):
+        return f"Emails({super().__str__()})"