__contains__(key) Return True if key corresponds to a message, False otherwise.

MimeTypes.types_map_inv Tuple containing two dictionaries, mapping MIME types to a list of filename extensions: the first dictionary

unlock() Three locking mechanisms are used—dot locking and, if available, the flock() and lockf()

register_defect(obj, defect) Register a defect on obj. In the email package, defect will always be

binascii.b2a_qp(data, quotetabs=False, istext=True, header=False) Convert binary data to a line(s) of ASCII characters in quoted-printable

cte_type Controls the type of Content Transfer Encodings that may be or are required to be used. The possible values are:

remove_folder(folder) Delete the folder whose name is folder. If the folder contains any messages, a NotEmptyError

make_mixed(boundary=None) Convert a non-multipart, a multipart/related, or a multipart-alternative

make_related(boundary=None) Convert a non-multipart message into a multipart/related message, moving

set_charset(charset) Set the character set of the payload to charset, which can either be a