diff --git a/config/config.py b/config/config.py
index c6e4c4e..94be5bd 100644
--- a/config/config.py
+++ b/config/config.py
@@ -38,7 +38,7 @@ class Mail:
     password: str
     use_user_name: bool
     user_name: str
-    signature: str
+    signature: str | None = None
     empty_signature = """<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
 
     <html><head><meta name="qrichtext" content="1" /><meta charset="utf-8" /><style
@@ -141,14 +141,6 @@ class Config:
     def set_zotero_attr(self, name, value):
         OmegaConf.update(self._config, f"zotero.{name}", value)
 
-    @property
-    def default_apps(self):
-        return self._config.default_apps
-
-    @default_apps.setter
-    def default_apps(self, value: bool):
-        self._config.default_apps = value
-
     @property
     def save_path(self):
         return self._config.save_path
@@ -165,3 +157,6 @@ class Config:
             str: Folder path as string
         """
         return self._config.icon_path
+
+    def dict(self):
+        return OmegaConf.to_container(self._config)
\ No newline at end of file
