如何正確使用smtplib發送電子郵件？

Question

我寫了一個代碼使用smtplib發送電子郵件，並給我“連接被拒絕”的錯誤

這是錯誤回溯

Traceback (most recent call last):
  File "mail.py", line 20, in <module>
    s = smtplib.SMTP('localhost')
  File "/usr/lib/python3.6/smtplib.py", line 251, in __init__
    (code, msg) = self.connect(host, port)
  File "/usr/lib/python3.6/smtplib.py", line 336, in connect
    self.sock = self._get_socket(host, port, self.timeout)
  File "/usr/lib/python3.6/smtplib.py", line 307, in _get_socket
    self.source_address)
  File "/usr/lib/python3.6/socket.py", line 724, in create_connection
    raise err
  File "/usr/lib/python3.6/socket.py", line 713, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

python文件

    import smtplib

    from email.message import EmailMessage

    msg = EmailMessage()
    msg.set_content('Hello, This message is sent by using python 
    smtplib')

    msg['Subject'] = 'Use of Smtp'
    msg['From'] = 'sen@gmail.com'
    msg['To'] = 'rec@gmail.com'

    # Send the message via our own SMTP server.
    s = smtplib.SMTP('localhost')
    s.send_message(msg)
    s.quit()

Answer 1

如果要將郵件發送到gmail，則必須修改gmail開發設置。 請參閱下面的更多信息： https : //realpython.com/python-send-email/