import osimport smtplibfrom email.message import EmailMessageimport imghdr#这里使用qq邮箱进行测试#发送普通文本#从环境变量中获取#电子邮箱地址和密码EMAIL_ADDRESS = os.environ.get('EMAIL_ADDRESS')EMAIL_PASSWORD = os.environ.get('EMAIL_PASSWORD')#获取收件人的邮箱地址EMAIL_RECEVIER = os.environ.get('EMAIL_RECEVIER')
with smtplib.SMTP('smtp.qq.com',25) as smtp:  #使用ehlo识别smtp服务器  smtp.ehlo()  #启用TLS  smtp.starttls()  #再次识别smtp  smtp.ehlo()  #登录smtp  smtp.login(EMAIL_ADDRESS,EMAIL_PASSWORD)  #smtp.set_debuglevel(1)调试使用  subject = 'hello where are you ?'  body ='Hi In China!!!!!!'  msg = f'{subject}\n\n{body}'  smtp.sendmail(EMAIL_ADDRESS,EMAIL_RECEVIER,msg)##注意这里测试的时候，发件人使用的是qq邮箱##使用163邮箱作为发件人会出很多问题。##这里的密码是邮箱的授权码 需要自己登录到邮箱进行设置
####使用EmailMessage对象设置邮件主题内容发送e_msg = EmailMessage()e_msg['Subject'] = 'Life is short !!!'e_msg['From']  = EMAIL_ADDRESSe_msg['To'] = EMAIL_RECEVIERe_msg.set_content('How about python?')with smtplib.SMTP('smtp.qq.com',25) as smtp:  smtp.login(EMAIL_ADDRESS,EMAIL_PASSWORD)  smtp.send_message(e_msg)
##发送带附件的邮件e_msg = EmailMessage()e_msg['Subject'] = 'Image from my PC!!!'e_msg['From']  = EMAIL_ADDRESSe_msg['To'] = EMAIL_RECEVIERe_msg.set_content('Image moto attached。。。')#打开图片，添加图片信息到e_msg中with open('0.jpg','rb') as f:  file_data = f.read()  file_type = imghdr.what(f.name)  file_name = f.namee_msg.add_attachment(file_data,maintype='image',subtype=file_type,filename=file_name)#也可以添加多张图片，使用for实现即可#如果是pdf文件做如下调整#e_msg.add_attachment(file_data,maintype='application',subtype='octet-stream',filename=file_name)#其他格式文件可参考apiwith smtplib.SMTP('smtp.qq.com',25) as smtp:  smtp.login(EMAIL_ADDRESS,EMAIL_PASSWORD)  smtp.send_message(e_msg)
####发送一个HTML格式的邮件e_msg = EmailMessage()e_msg['Subject'] = 'html email send!!!'e_msg['From']  = EMAIL_ADDRESSe_msg['To'] = EMAIL_RECEVIERe_msg.set_content('This is a plain text email')e_msg.add_alternative("""\            
This is an HTML Email!    """, subtype='html')with smtplib.SMTP('smtp.qq.com',25) as smtp:  smtp.login(EMAIL_ADDRESS,EMAIL_PASSWORD)  smtp.send_message(e_msg)