html很簡單，只要MIMEText中的引數改成html即可

附件也不難，難的是加圖片

雖然圖片可以當做附件傳送，但是顯然還需要一個加入正文的功能，方法是用html的img標籤把圖片加入。但是這樣會有個問題，一般的郵箱都會將這種連結遮蔽掉。這個問題有2種解決方法，第一種是先把圖片加入到附件，然後再把圖片加入正文，第二種是利用MIMEMultipart的三層結構。第一種方法就不能把圖片直接加入正文而不加入附件列表，所以我採用第二種。

程式碼：

#coding=utf-8
import smtplib
import json
fromemail.mime.text import MIMEText
from
 
email.mime.image  import  MIMEImage
fromemail.mime.multipart import MIMEMultipart

host = ''
user = ''  #發件人
password = ''
sender = ''

defsend_mail(to_list, subject, content,content_type='plain'):
    msg_alt = MIMEMultipart('alternative')
    msg_rel = MIMEMultipart('related')
    msg = MIMEMultipart
 
('mixed')
    msg_rel.attach(msg_alt)
    msg.attach(msg_rel)
    msg['from'] = user
    msg['to'] = ','.join(to_list)   #注意，不是分號
    msg['subject'] = subject
    if(content_type == 'plain'):
        for type,item incontent:
            if type == 'text':
                text = MIMEText(item,'plain'
 
,'utf-8')
                msg_alt.attach(text)
            eliftype == 'attach_path':
                attachment = get_attach(item)
                if(attachment):
                    msg.attach(attachment)
            else:
                #print('type error')
                pass
    elifcontent_type == 'html':
        mailBody = ''
        for type,item incontent:
            if type == 'html':
                mailBody += item
            eliftype == 'image_path':
                image = get_image(item)
                if(image):
                    con = '<p><img src=cid:'+ item +'></p>'
                    mailBody = mailBody + con
                    msg_rel.attach(image)
            eliftype == 'attach_path':
                attachment = get_attach(item)
                if(attachment):
                    msg.attach(attachment)
            else:
                #print('type error')
                pass
        html = MIMEText(mailBody,'html','utf-8')
        msg_alt.attach(html)
    else:
        return False

    server = smtplib.SMTP()
    #server.set_debuglevel(1)
    try:
        server.connect(host,25)
    except:
        print('connect fail')

    try:
        server.ehlo(user)
        server.login(user,password)
        print('login ok')
    except:
        print('login fail')

    try:
        server.sendmail(sender, to_list, str(msg))
        server.close()
        return True
    exceptOSError:
        print('OSError')
        return False
    except:
        print('unexpect error')
        return False

#新增圖片內容到正文
defget_image(image_path):
    try:
        fp = open(image_path,'rb')
    except:
        return None
    image = MIMEImage(fp.read())
    fp.close()
    image.add_header( 'Content-ID' ,  '<'+image_path+'>' )
    return image

#新增附件
defget_attach(attach_path):
    try:
        f = open(attach_path,'rb')
        att = MIMEText(f.read(),'base64', 'utf-8')
        f.close()
    exceptFileNotFoundError:
        print('FileNotFound')
        return None
    except:
        print('unexpect error')
        return None
    att['Content-Type'] = 'application/octet-stream'
    att['Content-Disposition'] = 'attachment; filename='+attach_path
    return att

defanalysis(json_arg):
    arg = json.loads(json_arg)
    to_list = arg['to_list']
    subject = arg['subject']
    content = arg['content']
    content_type = 'plain'
    try:
        content_type = arg['content_type']
    except:
        pass
    return 

deftest1():
    recv = ['']
    content = (('text','這不是垃圾郵件啊啊啊啊啊'),('attach_path','1.txt'))
    arg1 = {'to_list':recv, 'subject':'test', 'content':content}
    json_arg = json.dumps(arg1)
    if(analysis(json_arg)):
        print('send ok')
    else:
        print('send fail')

deftest2():
    recv = ['']
    html = '<a href="http://www.baidu.com">百度連結</a>'
    content = (('html' ,'看圖'),('attach_path','1.txt'),('image_path','1.jpg'),('image_path','2.png'),('html',html))  #html的值不一定非要html程式碼，普通字串也行
    arg2 = {'to_list':recv, 'subject':'test', 'content':content,'content_type':'html'}
    json_arg = json.dumps(arg2)
    if(analysis(json_arg)):
        print('send ok')
    else:
        print('send fail')


if __name__ == '__main__':
    test1()
    test2()

'''
send_mail.py介面說明：
函式analysis(json_arg)只有1個引數，json_arg是json型別，元素有3-4個
4個元素的鍵依次是to_list，subject,content,content_type
（1）to_list是收件人列表，是列表型別，其中每個元素（至少1個元素）都是字串，對應一個郵箱地址
（2）subject是郵件標題，是字串型別
（3）content是元祖型別，每個元素（type,item)是郵件正文中的1個內容，
type是'text'或'html'或'attach_path'或'image_path'，對應的item（都是字串）分別代表文字、html程式碼、附件名、圖片名（如果需要的話前面帶上路徑名）
（4）content_type是'plain'或'html'，如果是'plain'（可以預設）那麼content是'text'或'attach_path'，如果是'html'那麼content是'html'或'attach_path'或'image_path'
'''