@@ -0,0 +1,36 @@
+import re
+
+
+class Emails(list):
+
+    def __init__(self, emails=None):
+        super().__init__()
+
+        if emails is None:
+            emails = []
+
+        for email in emails:
+            self.validate(email)
+
+            if email not in self:
+                self.append(email)
+
+        self.data = self
+
+    @staticmethod
+    def validate(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 re.fullmatch(pattern, email) is None:
+            raise ValueError("Invalid email address")
+
+        return True
+
+    def __repr__(self):
+        return f"Emails({list(self)!r})"
+
+    def __str__(self):
+        return str(list(self))