diff --git a/stdlib/email/charset.pyi b/stdlib/email/charset.pyi
index d61950a26..f8de016ab 100644
--- a/stdlib/email/charset.pyi
+++ b/stdlib/email/charset.pyi
@@ -19,11 +19,11 @@ class Charset:
     def get_body_encoding(self) -> str | Callable[[Message], None]: ...
     def get_output_charset(self) -> str | None: ...
     def header_encode(self, string: str) -> str: ...
-    def header_encode_lines(self, string: str, maxlengths: Iterator[int]) -> list[str]: ...
+    def header_encode_lines(self, string: str, maxlengths: Iterator[int]) -> list[str | None]: ...
     @overload
     def body_encode(self, string: None) -> None: ...
     @overload
-    def body_encode(self, string: str) -> str: ...
+    def body_encode(self, string: str | bytes) -> str: ...
     def __eq__(self, other: object) -> bool: ...
     def __ne__(self, __value: object) -> bool: ...
 
diff --git a/stdlib/email/policy.pyi b/stdlib/email/policy.pyi
index dc7f18489..804044031 100644
--- a/stdlib/email/policy.pyi
+++ b/stdlib/email/policy.pyi
@@ -53,7 +53,7 @@ compat32: Compat32
 class EmailPolicy(Policy):
     utf8: bool
     refold_source: str
-    header_factory: Callable[[str, str], str]
+    header_factory: Callable[[str, Any], Any]
     content_manager: ContentManager
     def __init__(
         self,
@@ -70,9 +70,9 @@ class EmailPolicy(Policy):
         content_manager: ContentManager = ...,
     ) -> None: ...
     def header_source_parse(self, sourcelines: list[str]) -> tuple[str, str]: ...
-    def header_store_parse(self, name: str, value: str) -> tuple[str, str]: ...
-    def header_fetch_parse(self, name: str, value: str) -> str: ...
-    def fold(self, name: str, value: str) -> str: ...
+    def header_store_parse(self, name: str, value: Any) -> tuple[str, Any]: ...
+    def header_fetch_parse(self, name: str, value: str) -> Any: ...
+    def fold(self, name: str, value: str) -> Any: ...
     def fold_binary(self, name: str, value: str) -> bytes: ...
 
 default: EmailPolicy