如何使用Python发送SMTP消息？

Question

我已经检查了代码，并确保我的凭据正确无误。我不断收到如下错误：

smtplib.SMTPServerDisconnected: Connection unexpectedly closed

任何帮助将不胜感激：）

这是代码：

import smtplib


def EmailSender():
    ##try:
    server=smtplib.SMTP(host='smtp.gmail.com', port=465)
    server.starttls()
    server.login("my gmail email","my gmail password")

    msg=MIMEMultipart()
    message=message_template.substitute(NAME=name.title())
    msg['From']=MYADDR
    msg['To']=SENDTO
    msg['Subject']="Testing functionality of Python is sometimes painstaking, but when you see that message come through, it's well worth it :)"

    msg.attatch(MIMEText(message, 'plain'))

    server.send_message(msg)
    ##except:
    ##    print("There was an error esablishing a connection...")

EmailSender()