fixed bare exception

apistar_mail/mail.py

@@ -43,7 +43,7 @@ def force_text(s, encoding='utf-8', errors='strict', ):
                 raise MailUnicodeDecodeError(s, *e.args)
             else:
                 s = ' '.join([force_text(arg, encoding, errors) for arg in s])
-        except:
+        except UnicodeDecodeError as e:
             raise MailUnicodeDecodeError(s, *e.args)
 
     return s
@@ -112,9 +112,6 @@ def _has_newline(line):
     return False
 
 
-
-
-
 class Attachment:
     """Encapsulates file attachment information.