diff --git a/Week05/emails_yasin_soytas.py b/Week05/emails_yasin_soytas.py
new file mode 100644
index 00000000..4eeb224a
--- /dev/null
+++ b/Week05/emails_yasin_soytas.py
@@ -0,0 +1,12 @@
+class Emails(list):
+    def __init__(self, emails=None):
+        super().__init__()
+
+        if emails is None:
+            return
+
+        for email in emails:
+            if isinstance(email, str) and "@" in email:
+                email = email.lower()
+                if email not in self:
+                    self.append(email)