Python发送邮件的实例代码讲解

一、邮件发送示例

邮件发送示例

flask_email及smtplib原生邮件发送示例，适用于基于Flask框架开发，但是内部设置的定时任务发送邮件/或提供离线接口发送邮件操作

1.flask config配置

# QQ邮箱配置
MAIL_DEBUG = True # 开启debug，便于调试看信息
MAIL_SUPPRESS_SEND = False # 发送邮件，为True则不发送
MAIL_SERVER = 'smtp.qq.com' # 邮箱服务器
MAIL_PORT = 465 # 端口
MAIL_USE_SSL = True # 重要，qq邮箱需要使用SSL
MAIL_USE_TLS = False # 不需要使用TLS
MAIL_USERNAME = '@qq.com' # 填邮箱
MAIL_PASSWORD = '' # 填授权码
FLASK_MAIL_SENDER = '@qq.com' # 邮件发送方
FLASK_MAIL_SUBJECT_PREFIX = '' # 邮件标题
MAIL_DEFAULT_SENDER = '@qq.com' # 填邮箱，默认发送者

2.示例代码

import smtplib
import constant # 定义常量文件
from email.header import Header
from email.mime.text import MIMEText

constant.SMTP_SERVER = 'smtp.qq.com'
constant.PORT = 465

class EmailSender(object):
 def __init__(self, subject, receivers, sender='ss@qq.com', password='123456', offline=False, html_body=None,
        text_body=None, **kwargs):
   self.subject = subject
   self.receivers = receivers
   self.sender = sender
   self.password = password
   if offline:
     if html_body:
       self.send_body = html_body
       self._subtype = 'html'
     elif text_body:
       self.send_body = text_body
       self._subtype = 'plain'
     self.send_email_offline()
   else:
     from flask_mail import Mail
     self.mail = Mail()
     dic = dict(kwargs)
     self.send_email(html_body, text_body, attachments=dic.get("attachments"), sync=dic.get("sync"))

def send_email_offline(self):
   try:
     message = MIMEText(self.send_body, self._subtype, 'utf-8')
     message['From'] = self.sender
     message['To'] = ','.join(self.receivers)
     message['Subject'] = Header(self.subject, 'utf-8')
     smtpObj = smtplib.SMTP_SSL(constant.SMTP_SERVER, constant.PORT)
     smtpObj.login(self.sender, self.password)
     smtpObj.sendmail(
       self.sender, self.receivers, message.as_string())
     smtpObj.quit()
   except smtplib.SMTPException:
     return "smtp服务器发送异常 >> 无法发送邮件"
   except Exception as e:
     return f"邮件发送失败 >> {e}"

def send_email(self, text_body, html_body, attachments=None, sync=False):
   from threading import Thread
   from flask import current_app
   from flask_mail import Message
   try:
     msg = Message(self.subject, recipients=self.receivers)
     msg.body = text_body
     msg.html = html_body
     if attachments:
       for attachment in attachments:
         msg.attach(*attachment)
     if not sync:
       self.mail.send(msg)
     else:
       Thread(target=self.send_async_email, args=(current_app._get_current_object(), msg)).start()
   except Exception as e:
     return f"邮件发送失败 >> {e}"

def send_async_email(self, app, msg):
   with app.app_context():
     try:
       self.mail.send(msg)
     except Exception as e:
       print(f"邮件发送错误信息:{e}")

3.使用

err = EmailSender(subject='吃货询问', receivers=["123@qq.com", "1234@qq.cn"], text_body='吃了没呀？', offline=True)
if err:
 print(err)

以上3点就是关于Python发送邮件的全部知识点，感谢大家的学习和对脚本之家的支持。

来源：https://www.cnblogs.com/zhangliang91/p/11684551.html