base64.b64decode(s, altchars=None, validate=False) Decode the Base64 encoded bytes-like object

write(s) Write the string s to the underlying file object, i.e. outfp passed to Generator‘s constructor

email.utils.make_msgid(idstring=None, domain=None) Returns a string suitable for an

__len__() Return a count of messages in the mailbox.

get_params(failobj=None, header='content-type', unquote=True) Return the message’s Content-Type

mimetypes.suffix_map Dictionary mapping suffixes to suffixes. This is used to allow recognition of encoded files for which the

base64.decodestring(s) Decode the bytes-like object s, which must contain one

class mailbox.Mailbox A mailbox, which may be inspected and modified. The Mailbox

MimeTypes.types_map Tuple containing two dictionaries, mapping filename extensions to MIME types: the first dictionary is for

mimetypes.common_types Dictionary mapping filename extensions to non-standard, but commonly found MIME types.