diff --git a/flask_restx/inputs.py b/flask_restx/inputs.py
index b05532f3..9c76d8a0 100644
--- a/flask_restx/inputs.py
+++ b/flask_restx/inputs.py
@@ -48,7 +48,7 @@ def my_type(value):
 
 
 email_regex = re.compile(
-    r"^" "(?P<local>[^@]*[^@.])" r"@" r"(?P<server>[^@]+(?:\.[^@]+)*)" r"$",
+    r"^" "(?P<local>[^@]*[^@.])" r"@" r"(?P<server>[^@\.]+(?:\.[^@\.]+)*)" r"$",
     re.IGNORECASE,
 )