SMTP.send_message(msg, from_addr=None, to_addrs=None, mail_options=[], rcpt_options=[]) This is a convenience method for calling sendmail() with the message represented by an email.message.Message object. The arguments have the same meaning as for sendmail(), except that msg is a Message object. If from_addr is None or to_addrs is None, send_message fills those arguments with addresses extracted from the headers of msg as specified in RFC 5322: from_addr is set to the Sender field if it is p

exception smtplib.SMTPAuthenticationError SMTP authentication went wrong. Most probably the server didn’t accept the username/password combination provided.

SMTP.starttls(keyfile=None, certfile=None, context=None) Put the SMTP connection in TLS (Transport Layer Security) mode. All SMTP commands that follow will be encrypted. You should then call ehlo() again. If keyfile and certfile are provided, these are passed to the socket module’s ssl() function. Optional context parameter is a ssl.SSLContext object; This is an alternative to using a keyfile and a certfile and if specified both keyfile and certfile should be None. If there has been no previ

SMTP.set_debuglevel(level) Set the debug output level. A value of 1 or True for level results in debug messages for connection and for all messages sent to and received from the server. A value of 2 for level results in these messages being timestamped. Changed in version 3.5: Added debuglevel 2.

SMTP.helo(name='') Identify yourself to the SMTP server using HELO. The hostname argument defaults to the fully qualified domain name of the local host. The message returned by the server is stored as the helo_resp attribute of the object. In normal operation it should not be necessary to call this method explicitly. It will be implicitly called by the sendmail() when necessary.

SMTP.quit() Terminate the SMTP session and close the connection. Return the result of the SMTP QUIT command.

SMTP.has_extn(name) Return True if name is in the set of SMTP service extensions returned by the server, False otherwise. Case is ignored.

SMTP.login(user, password, *, initial_response_ok=True) Log in on an SMTP server that requires authentication. The arguments are the username and the password to authenticate with. If there has been no previous EHLO or HELO command this session, this method tries ESMTP EHLO first. This method will return normally if the authentication was successful, or may raise the following exceptions: SMTPHeloError The server didn’t reply properly to the HELO greeting. SMTPAuthenticationError The s

SMTP.sendmail(from_addr, to_addrs, msg, mail_options=[], rcpt_options=[]) Send mail. The required arguments are an RFC 822 from-address string, a list of RFC 822 to-address strings (a bare string will be treated as a list with 1 address), and a message string. The caller may pass a list of ESMTP options (such as 8bitmime) to be used in MAIL FROM commands as mail_options. ESMTP options (such as DSN commands) that should be used with all RCPT commands can be passed as rcpt_options. (If you nee

SMTP.auth(mechanism, authobject, *, initial_response_ok=True) Issue an SMTP AUTH command for the specified authentication mechanism, and handle the challenge response via authobject. mechanism specifies which authentication mechanism is to be used as argument to the AUTH command; the valid values are those listed in the auth element of esmtp_features. authobject must be a callable object taking an optional single argument: data = authobject(challenge=None) If optional keyword argument ini