发邮件与收邮件

使用qq邮箱发邮件代码如下:

import smtplib

from email.mime.text import MIMEText

msg = MIMEText('hello, send by Python...', 'plain', 'utf-8')

# 输入Email地址和授权口令:
from_addr = input('From:')
password = input('Password:')
# 输入收件人地址:
to_addr = input('To:')
# 输入SMTP服务器地址:smtp.qq.com
smtp_server = input('SMTP server:')


server = smtplib.SMTP_SSL(smtp_server, 465) 
server.set_debuglevel(1)
server.login(from_addr, password)
server.sendmail(from_addr, [to_addr], msg.as_string())

server.quit()

使用126邮箱发邮件代码如下:

import smtplib
from email.mime.text import MIMEText
from email import encoders
from email.header import Header
from email.utils import parseaddr, formataddr


def _format_addr(s):
    name, addr = parseaddr(s)
    return formataddr((Header(name, 'utf-8').encode(), addr))


# 输入Email地址和授权口令:
from_addr = input('From:')
password = input('Password:')
# 输入收件人地址:
to_addr = input('To:')
# 输入SMTP服务器地址:smtp.126.com
smtp_server = input('SMTP server:')


msg = MIMEText('hello, send by Python...', 'plain', 'utf-8')
msg['From'] = _format_addr('Python爱好者 <%s>' % from_addr)
msg['To'] = _format_addr('管理员 <%s>' % to_addr)
msg['Subject'] = Header('来自SMTP的问候……', 'utf-8').encode()


server = smtplib.SMTP(smtp_server, 25)
server.set_debuglevel(1)
server.login(from_addr, password)
server.sendmail(from_addr, [to_addr], msg.as_string())

server.quit()

收邮件代码如下:

import poplib
from email.parser import Parser
from email.header import decode_header
from email.utils import parseaddr

# 输入邮件地址, 口令和POP3服务器地址:pop.qq.com/pop.126.com
email = input('Email: ')
password = input('Password: ')
pop3_server = input('POP3 server: ')

# 连接到POP3服务器:
server = poplib.POP3_SSL(pop3_server)
# 可以打开或关闭调试信息:
server.set_debuglevel(1)
# 可选:打印POP3服务器的欢迎文字:
print(server.getwelcome().decode('utf-8'))

# 身份认证:
server.user(email)
server.pass_(password)


# stat()返回邮件数量和占用空间:
print('Messages: %s. Size: %s' % server.stat())
# list()返回所有邮件的编号:
resp, mails, octets = server.list()
# 可以查看返回的列表类似[b'1 82923', b'2 2184', ...]
print(mails)

# 获取最新一封邮件, 注意索引号从1开始:
index = len(mails)
resp, lines, octets = server.retr(index)

# lines存储了邮件的原始文本的每一行,
# 可以获得整个邮件的原始文本:
msg_content = b'\r\n'.join(lines).decode('utf-8')
# 稍后解析出邮件:
msg = Parser().parsestr(msg_content)

# 可以根据邮件索引号直接从服务器删除邮件:
# server.dele(index)
# 关闭连接:
server.quit()

# indent用于缩进显示:
def print_info(msg, indent=0):
    if indent == 0:
        for header in ['From', 'To', 'Subject']:
            value = msg.get(header, '')
            if value:
                if header=='Subject':
                    value = decode_str(value)
                else:
                    hdr, addr = parseaddr(value)
                    name = decode_str(hdr)
                    value = u'%s <%s>' % (name, addr)
            print('%s%s: %s' % ('  ' * indent, header, value))
    if (msg.is_multipart()):
        parts = msg.get_payload()
        for n, part in enumerate(parts):
            print('%spart %s' % ('  ' * indent, n))
            print('%s--------------------' % ('  ' * indent))
            print_info(part, indent + 1)
    else:
        content_type = msg.get_content_type()
        if content_type=='text/plain' or content_type=='text/html':
            content = msg.get_payload(decode=True)
            charset = guess_charset(msg)
            if charset:
                content = content.decode(charset)
            print('%sText: %s' % ('  ' * indent, content + '...'))
        else:
            print('%sAttachment: %s' % ('  ' * indent, content_type))


def decode_str(s):
    value, charset = decode_header(s)[0]
    if charset:
        value = value.decode(charset)
    return value


def guess_charset(msg):
    charset = msg.get_charset()
    if charset is None:
        content_type = msg.get('Content-Type', '').lower()
        pos = content_type.find('charset=')
        if pos >= 0:
            charset = content_type[pos + 8:].strip()
    return charset

print_info(msg)

参考资料：

https://my.oschina.net/jhao104/blog/613774
https://www.jianshu.com/p/8d4b3e08c2c6
https://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000/0014320098721191b70a2cf7b5441deb01595edd8147196000