python3使用stmplib发送邮件

代码如下：

import smtplib
from email.mime.text import MIMEText
from email.header import Header
from email.utils import formataddr

# 第三方 SMTP 服务
mail_host = "smtp.exmail.qq.com"
mail_port = 465  # 也可能是25，看情况。SMTPS的话一般是465
mail_user = "a@a.com"
mail_pass = "aaa"   # 密码或邮箱授权码

mail_sender = 'a@a.com'
mail_receivers = ['a@a.com']

subject = '邮件主题'
message = MIMEText('邮件内容', 'plain', 'utf-8')  # plain表示邮件类型
message['From'] = formataddr(["发件人别称", "a@a.com"])
message['To'] = formataddr(["收件人别称", "a@a.com"])
message['Subject'] = Header(subject, 'utf-8')

def sendmail(host, port, sender, password, recvivers, meassage):
    try:
        mail_obj = smtplib.SMTP_SSL()  # 邮件服务器使用 SMTPS 的时候用 SMTP_SSL
        mail_obj.connect(host, port)
        mail_obj.login(sender, password)
        mail_obj.sendmail(sender, recvivers, meassage.as_string())
        mail_obj.quit()
        print("Send sucessful")
        return True
    except Exception as e:
        err = "Send Failed for reason:\n {}".format(e)
        print(err)
        return False

sendmail(mail_host, mail_port, mail_sender, mail_pass, mail_receivers, message)