def send_mail(subject, message, from_email, recipient_list,
  fail_silently=False, auth_user=None, auth_password=None,
  connection=None, html_message=None):
 pass    
def send_mass_mail(datatuple, fail_silently=False, auth_user=None,
   auth_password=None, connection=None):
 pass
# 参数介绍 
# subject: 邮件主题 
# message: 邮件内容 
# from_email: 发件人 
# recipient_list: 收件人，这是一个列表，可以有多个收件人 
# 以上4个在参数 在send_mass_mail中，会写在datatuple这个元组中 
# fail_silently: 是否报错，True的话表忽略异常 
# auth_user&auth_password:账号密码 
# connection: 表示这个的链接对象，后续会提到 
# html_message: send_mail方法独有，可以比较简单地实现一个html文本的传输，具体我也没使用过，不是很了解。

# settings.py
# 我使用的是新浪的，host可以在对应邮箱的设置中找到
EMAIL_HOST = 'smtp.sina.com'
EMAIL_PORT = 25
# 你的邮箱账号与密码
EMAIL_HOST_USER = 'viptestfordjango@sina.com'
EMAIL_HOST_PASSWORD = '******'
# 由于使用25端口，一般都不使用TLS机密，SSL和TSL只需要设置一个，他们同时为True或False
EMAIL_USE_TLS = False
# 发件人，只有这个变量名可以自己自定义，设置在这里是为了减少每次去写
EMAIL_FROM = 'viptestfordjango@sina.com'

from django.core.mail import send_mail, send_mass_mail
from string import lowercase,uppercase,digits
from random import randint
from project.settings import EMAIL_FROM
def send_code_email(email)：
 """
 发送验证码
 """
 # 0-9 a-z A-z
 code = ''
 seeds= lowercase+uppercase+digits
 length = len(seeds)
 # 生成4位验证码
 for i in range(4):
  code += seeds[randint(0, length-1)]
 send_title = '重置密码'
 send_message = '你的验证码是:{0}。'.format(code)
 send_status = send_mail(email_title, email_body, EMAIL_FROM, [email])
def send_hello_email(email1, email2):
 """
 给email1发送 新年好
 给email2发送 Happy New Year
 """
 # message格式(subject, message, from_email, recipient_list)
 message1 = ('新年好', '新年好', 'EMAIL_FROM', [email])
 message2 = ('Happy New Year', 'Happy New Year', EMAIL_FROM, [email2])
 send_status=send_mass_mail((message1, message2), fail_silently=False)

# 类定义
class EmailMessage(object):
 def __init__(self, subject='', body='', from_email=None, to=None, bcc=None,
     connection=None, attachments=None, headers=None, cc=None,
     reply_to=None):
 pass
# 使用
from django.core.mail import EmailMessage
email = EmailMessage(
 'Hello',
 'Body goes here',
 'from@example.com',
 ['to1@example.com', 'to2@example.com'],
 ['bcc@example.com'],
 reply_to=['another@example.com'],
 headers={'Message-ID': 'foo'},
)

from django.core import mail
with mail.get_connection() as connection:
 mail.EmailMessage(
  subject1, body1, from1, [to1],
  connection=connection,
 ).send()
 mail.EmailMessage(
  subject2, body2, from2, [to2],
  connection=connection,
 ).send()

from django.core import mail
connection = mail.get_connection()
# get_EmailMessage_list返回一个EmailMessage对象的列表
messages = get_EmailMessage_list()
connection.send_messages(messages)

from django.core import mail
connection = mail.get_connection()
connection.open()
email1 = mail.EmailMessage(
 'Hello',
 'Body goes here',
 'from@example.com',
 ['to1@example.com'],
 connection=connection,
)
email1.send()
email2 = mail.EmailMessage(
 'Hello',
 'Body goes here',
 'from@example.com',
 ['to2@example.com'],
)
email3 = mail.EmailMessage(
 'Hello',
 'Body goes here',
 'from@example.com',
 ['to3@example.com'],
)
connection.send_messages([email2, email3])
connection.close()

# 在django.core.mail。backends.smtp.下
class EmailBackend(BaseEmailBackend):
 def __init__(self, host=None, port=None, username=None, password=None,
     use_tls=None, fail_silently=False, use_ssl=None, timeout=None,
     ssl_keyfile=None, ssl_certfile=None,**kwargs):
  pass

EMAIL_BACKEND = 'django.core.mail.backends.dummy.EmailBackend'