这篇文章主要讲解了Python基于smtplib模块发送邮件的代码详解，内容清晰明了，对此有兴趣的小伙伴可以学习一下，相信大家阅读完之后会有帮助。

smtplib模块负责发送邮件：是一个发送邮件的动作，连接邮箱服务器，登录邮箱，发送邮件（有发件人，收信人，邮件内容）。

email模块负责构造邮件：指的是邮箱页面显示的一些构造，如发件人，收件人，主题，正文，附件等。

email模块下有mime包，mime英文全称为“Multipurpose Internet Mail Extensions”，即多用途互联网邮件扩展，是目前互联网电子邮件普遍遵循的邮件技术规范。

该mime包下常用的有三个模块：text，image，multpart。

import smtplibfrom email.mime.text import MIMETextfrom email.mime.multipart import MIMEMultipartfrom email.header import Header#邮件服务器信息smtp_server = "smtp.qq.com"port = 465 # For starttlssender_email = "12345689@qq.com"password="" #get password from mailsetting#发送邮件信息,可以发送给多个收件人receivers=["12345689@163.com","12345689@qq.com"]subject="This is import Python SMTP 邮件(文件传输) 多媒体测试"# message = MIMEText(text, "plain", "utf-8") #文本邮件message = MIMEMultipart()message["Subject"] = Header(subject, "utf-8")message["from"] = sender_emailmessage["to"] = ",".join(receivers)# 邮件正文内容text="""Dear Sir:how are you ? \nfor detail information pls refer to attach2。\nThe files you need are as followed.\nIf you have any concern pls let me known.\nenjoy your weekend.\nBEST REGARDS \n"""# message.attach(MIMEText('for detail information pls refer to attach2。\n The files you need are as followed. \n If you have any concern pls let me known. \n enjoy your weekend', 'plain', 'utf-8')message.attach(MIMEText(text,'plain','utf-8'))# 构造附件1attach_file1='IMG1965.JPG'attach2 = MIMEText(open(attach_file1, 'rb').read(), 'base64', 'utf-8')attach2["Content-Type"] = 'application/octet-stream'attach2["Content-Disposition"] = 'attachment; filename={0}'.format(attach_file1)message.attach(attach2)# 构造附件2attach_file2='YLJ.jpg'attach3 = MIMEText(open(attach_file2, 'rb').read(), 'base64', 'utf-8')attach3["Content-Type"] = 'application/octet-stream'attach3["Content-Disposition"] = 'attachment; filename={0}'.format(attach_file2)message.attach(attach3)# Try to log in to server and send email# server = smtplib.SMTP_SSL(smtp_server,port)server = smtplib.SMTP_SSL(smtp_server,port)try: server.login(sender_email, password) server.sendmail(sender_email,receivers,message.as_string()) print("邮件发送成功!!!") print("Mail with {0} & {1} has been send to {2} successfully.".format(attach_file1,attach_file2,receivers))except Exception as e: # Print any error messages to stdout print("Error: 无法发送邮件") print(e)finally: server.quit()

结果

邮件发送成功!!!

Mail with IMG1965.JPG & IMG1963.jpg has been send to ['12345689@163.com', '12345689@qq.com'] successfully.

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