email.encoders.encode_noop(msg) This does nothing; it doesn’t even set the Content-Transfer-Encoding

class email.message.EmailMessage(policy=default) If policy is specified (it must be an instance of a

class mimetypes.MimeTypes(filenames=(), strict=True) This class represents a MIME-types database. By default, it provides access

email.utils.decode_params(params) Decode parameters list according to

class mailbox.BabylMessage(message=None) A message with Babyl-specific behaviors. Parameter message has the same meaning

binascii.unhexlify(hexstr) Return the binary data represented by the hexadecimal string hexstr. This function is the

binascii.hexlify(data) Return the hexadecimal representation of the binary data. Every byte of data is converted

get_output_charset() Return the output character set. This is the output_charset attribute

quopri.encodestring(s, quotetabs=False, header=False) Like encode(), except that it accepts a source

get_content_maintype() Return the message’s main content type. This is the maintype part of the string