diff --git a/Week05/emails_muhammet_topcu.py b/Week05/emails_muhammet_topcu.py
new file mode 100644
index 00000000..0fcca786
--- /dev/null
+++ b/Week05/emails_muhammet_topcu.py
@@ -0,0 +1,26 @@
+import re
+
+class Emails(list):
+    def __init__(self, emails):
+        self.validate(emails)
+        unique = []
+        for e in emails:
+            if e not in unique:
+                unique.append(e)
+        super().__init__(unique)
+        self.data = unique
+
+    @staticmethod
+    def validate(emails):
+        if not all(isinstance(e, str) for e in emails):
+            raise ValueError("emails must be strings")
+        pattern = re.compile(r"^[^@]+@[^@]+\.[^@]+$")
+        for e in emails:
+            if not pattern.match(e):
+                raise ValueError("invalid email")
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}({list(self)})"
+
+    def __str__(self):
+        return ", ".join(self)