Python SMTP服务发送邮件

1. 首选需要拥有自己的SMTP服务器，为了方便我选择使用QQ的SMTP服务。所有首先启动QQ邮箱的SMTP服务，具体启用方式：登录QQ邮箱=》设置=》账户：
   
   此时会生成授权码，授权码为QQSMTP服务器的密码，账户为当前邮箱账户。

2.简单的发送邮件SMTP（不含附件）

import smtplibfrom email.mime.text import MIMETextfrom email.header import Header#设置发送者sender='[e-mail]'#设置接受者receivers= ['[e-mail]']#主题名称subject = 'hellow word'#设置邮件内容message = MIMEText('this is a example send by python smtp','plain','utf-8')#发送者名称message['From'] = Header('jecat','utf-8')#接收者名称message['To'] = Header('example','utf-8')#邮件主题或者标题message['Subject'] = Header(subject,'utf-8');try:    #设置SMTP服务器地址    smtpobj = smtplib.SMTP_SSL('smtp.qq.com',465)    #登录SMTP服务器    smtpobj.login('[e-mail]','服务器授权码');    #发送邮件    smtpobj.sendmail(sender,receivers,message.as_string());    print('邮件发送成功')except BaseException as msg:    print('邮件发送失败'),    print(msg);

测试结果：

3.发送邮件带附件SMTP

import smtplibfrom email.mime.text import MIMETextfrom email.header import Headerfrom email.mime.multipart import MIMEMultipart#设置发送者sender='[e-mail]'#设置接受者receivers= ['[e-mail]']#主题名称subject = 'hellow word'#设置邮件内容message = MIMEMultipart()#发送者名称message['From'] = Header('jecat','utf-8')#接收者名称message['To'] = Header('example','utf-8')#邮件主题或者标题message['Subject'] = Header(subject,'utf-8');#设置邮件正文text = MIMEText('email conetnet example','plain','utf-8')message.attach(text);#构造附件,上传e:\python\client.py e:\python\server.py#上传文件位置upfiles = ['e:\python\client.py','e:\python\server.py']#上传文件服务器保存的名称filenams = ['client.py','server.py']for index in range(len(upfiles)):    try:        attr = MIMEText(open(upfiles[index],'r+b').read(),'base64','utf-8')        attr['Content-Type']='application/octet-stream'        filename = '{0}{1}'.format('attachment; filename=',filenams[index])        attr["Content-Disposition"] = filename        message.attach(attr)    except BaseException as msg:        print("read filed failed %s"%msg)        passtry:    #设置SMTP服务器地址    smtpobj = smtplib.SMTP_SSL('smtp.qq.com',465)    #登录SMTP服务器    smtpobj.login('[e-mail]','服务器授权码');    #发送邮件    smtpobj.sendmail(sender,receivers,message.as_string());    print('邮件发送成功')    smtpobj.close();except BaseException as msg:    print('邮件发送失败'),    print(msg);    smtpobj.close();

4.读取邮件并且下载附件POP3
发现使用pop.qq.com取到的文件数量比实际少？？

import poplibimport emailfrom email.mime.text import MIMETextfrom email.header import decode_headerfrom email.mime.multipart import MIMEMultipartfrom email.utils import parseaddrfrom email.parser import Parser#对邮件内容的文字进行解码def decode_str(s):    val,charset = decode_header(s)[0]    if charset:        val = val.decode(charset)    return  val#猜测内容编码方式def guess_chart(msg):    #获取msg的编码    chartset = msg.get_charset()    if chartset is None:        #如果获取不到则从content-type里面获取        content_type = msg.get('Content-Type','').lower()        pos = content_type.find('charset=')        if pos >= 0:            chartset = content_type[pos+8:].strip()    return  chartset#获取emial的文件头里面的内容def get_email_object(email_msg,itemname):    item_val = email_msg.get(itemname,'')    if item_val:        if itemname == 'Subject':            #解码subject            return  decode_str(item_val)        if itemname == 'From' or itemname == 'To':            #解析发送者的名称和地址            hdr,addr =  parseaddr(item_val)            name = decode_str(hdr)            return  '%s <%s>' % (name,addr)        else:            return  item_valtry:    #设置SMTP服务器地址    popobj = poplib.POP3_SSL('pop.qq.com')    print(popobj.getwelcome());    #登录SMTP服务器    popobj.user('[e-mail]')    popobj.pass_("服务器授权码")    #获取邮箱信息    messagecount,messagesize = popobj.stat();    print('邮件个数:%d' % messagecount)    print('邮件大小:%d' % messagesize)    #获取邮件    resp,mails,octets = popobj.list();    #邮件响应结果bok    print(resp);    #邮件列表（下标，大小 ....）    print(mails);    print(octets);    print('****************************************************************************************')    for index in range(1,len(mails)):        # lines 存储原始邮件的每行数据        resp, lines, octets = popobj.retr(index)        #将每一行的内容合并成一个字符串,注意这里需要是bytes        msg_content = b'\r\n'.join(lines)        #开始解析邮件内容，这里需要是text        msg = Parser().parsestr(msg_content.decode())        #解析Emai的基本信息 From To Date Subject        print(msg.get_content_type())        EmailHeader = {}        EmailHeader['From'] = get_email_object(msg, 'From')        EmailHeader['To'] = get_email_object(msg, 'To')        EmailHeader['Date'] = get_email_object(msg, 'Date')        EmailHeader['Subject'] = get_email_object(msg, 'Subject')        print(EmailHeader)        print('****************************************************************************************')        #这里下载邮件附件，保存在当前路径下面        for part in msg.walk():            filename = part.get_filename()            content_type = part.get_content_type()            #保存附件，filename 为附件名称            if filename:                #解码文件名称                h = decode_str(filename)                #获取文件内容                data = part.get_payload(decode=True)                att_file = open('./download/'+h,'w+b');                att_file.write(data)                att_file.close()                print('download file=%s' % h)            #保存邮件正文,并不写文件,可以根据文件类型写文件            elif content_type == 'text/plain' or content_type == 'text/html':                data = part.get_payload(decode=True)                charset = guess_chart(part)                if charset:                    charset = charset.strip().split(';')[0]                    data = data.decode(charset)                    print(data)except BaseException as msg:    print('邮件发送失败'),    print(msg);