使用Python发送邮件

之前写了一个小工具从远程服务器下载文件，然后通过附件方式发送给自己的邮箱，中间用到了Python里跟邮件相关的两个标准库email和smtp，使用也并不复杂。

import smtplib
import ssl
from email import encoders
from email.mime.base import MIMEBase
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from typing import List, Tuple

from app.settings import config

context = ssl.create_default_context() # 初始化ssl上下文


def make_message(sender_email: str, receiver_email: str, subject: str,
                 content: str,
                 attachments: List[Tuple[str, bytes]]) ->
     MIMEBase:
    message = MIMEMultipart() # 创建一个Message对象并设置邮件的基本信息
    message['From'] = sender_email
    message['To'] = receiver_email
    message['Subject'] = subject
    message['Bcc'] = receiver_email

    message.attach(MIMEText(content, 'plain'))

    for name, binary_content in attachments: # 添加附件
        attachment = MIMEBase("application", "octet-stream")
        attachment.set_payload(binary_content)
        encoders.encode_base64(attachment)
        attachment.add_header(
            "Content-Disposition",
            f"attachment;
 filename= {
name}
    ",
        )
        message.attach(attachment)

    return message


def send_email(receiver_email: str, subject: str, content: str,
               attachments: List[Tuple[str, bytes]]):
    with smtplib.SMTP_SSL(config.host, config.port, context=context) as server: # 配置smtp发送服务器
        sender_email, password = config.email, config.password
        server.login(sender_email, password) # 登录邮箱账户
        message = make_message(sender_email, receiver_email, subject, content,
                               attachments)
        server.send_message(message, sender_email, receiver_email)

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