用Python通过SMTP发送邮件

发表于 更新于 分类于 Valine： 本文字数： 2.1k 阅读时长 ≈ 2 分钟 
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# -*- coding: utf-8 -*-
import traceback
import smtplib
import os
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.application import MIMEApplication
from email.utils import formataddr as _formataddr

def formataddr(addr):
    return ','.join([_formataddr([a.split("@")[0].strip(), a.strip()]) for a in addr.split(',')])

"""
smtp_server: SMTP服务器地址
from_addr: 发件人地址
to_addr: 收件人地址（多个地址用英文逗号分割）
subject: 邮件主题
content: 邮件内容
attachmentpaths: 附件的文件路径
html: 邮件内容是否是HTML格式
ssl: 使用SMTP_SLL（465端口）还是SMTL（25端口）
"""
def send_email(smtp_server, from_addr, password, to_addr, subject, content, attachmentpaths=[], html=False, ssl=True):
    try:
        msg = MIMEMultipart()
        msg['From'] = formataddr(from_addr)  # 括号里的对应发件人邮箱昵称、发件人邮箱账号
        msg['To'] = formataddr(to_addr)      # 括号里的对应收件人邮箱昵称、收件人邮箱账号
        msg['Subject'] = subject             # 邮件标题
        if html:
            context_part = MIMEText(content, 'html', 'utf-8')
        else:
            context_part = MIMEText(content, 'plain', 'utf-8')
        msg.attach(context_part)

        if attachmentpaths:
            for path in attachmentpaths:
                filedir, filename = os.path.split(path)
                part = MIMEApplication(open(path,'rb').read()) 
                part.add_header('Content-Disposition', 'attachment', filename=filename) 
                msg.attach(part)

        if ssl:
            server=smtplib.SMTP_SSL(smtp_server, 465)
        else:
            server=smtplib.SMTP(smtp_server, 25)  # 发件人邮箱中的SMTP服务器，端口是25
        server.login(from_addr, password)  # 括号中对应的是发件人邮箱账号、邮箱密码
        server.sendmail(from_addr, to_addr.split(','), msg.as_string())
        server.quit()  # 关闭连接
        return True
    except Exception:
        traceback.print_exc()
        return False

if __name__ == '__main__':
    # test

    send_email("smtp.163.com", "kyo_86@163.com", "XXXXXXXXX", "kyo_86@163.com",
                f"测试HTML内容和附件发送",
                """
<html>
<body>
    <img src="http://kyo86.com/images/saber.jpg"/>
</body>
</html>
                """,
                attachmentpaths=[r"./mailer.py"], html=True, ssl=True)