diff --git a/Week05/emails_yunus_dermencioglu.py b/Week05/emails_yunus_dermencioglu.py
new file mode 100644
index 00000000..bc11ef81
--- /dev/null
+++ b/Week05/emails_yunus_dermencioglu.py
@@ -0,0 +1,32 @@
+import re
+
+
+class Emails(list):
+
+    def __init__(self, emails):
+        super().__init__()
+        self.data = []
+
+        for email in emails:
+            self.validate(email)
+
+            if email not in self.data:
+                self.data.append(email)
+                super().append(email)
+
+    def validate(self, email):
+        if not isinstance(email, str):
+            raise ValueError("Email must be a string")
+
+        pattern = r"^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}$"
+
+        if not re.fullmatch(pattern, email):
+            raise ValueError("Invalid email address")
+
+        return True
+
+    def __repr__(self):
+        return f"Emails({self.data!r})"
+
+    def __str__(self):
+        return str(self.data)