basic email validation

contentctl/objects/email.py

@@ -1,11 +1,20 @@
 from __future__ import annotations
 
 from abc import ABC
+from typing import Any
 
-from pydantic import BaseModel
+from pydantic import BaseModel, model_validator
 
 
 class EmailObject(BaseModel, ABC):
     to: str
     subject: str
     message: str
+
+    @model_validator(mode="before")
+    # Validate the email address
+    def validate_email(cls, data: str) -> str:
+        if data.get("to"):
+            if "@" not in data.get("to"):
+                raise ValueError("Invalid email address")
+            return data