python之SMTP 向许多收件人发送邮件但未收到邮件

我编写了一个 Python 脚本来自动向我的 friend 发送一些信息。我使用了 SMTPlib，如果我只发送给我或另外一封电子邮件，它会很好用。

当我尝试发送到 17 封电子邮件(包括我的发件人电子邮件)时，它会显示在基于网络的 Gmail 的已发送邮件中。我看到邮件已发送，但我没有收到。只有第一个收件人收到了电子邮件。 如果我从那封邮件回复所有人，那么每个人都只会收到那个回复。

我不明白为什么当我从脚本发送它时他们没有收到它，我让我的 friend 检查垃圾邮件，但她没有找到任何东西。

这是我的代码:

#!/usr/bin/env python 
import smtplib 
import csv 
from datetime import datetime, timedelta 
 
SMTP_SERVER  = 'smtp.gmail.com' 
SMTP_PORT = 587 
 
sender = 'MYBOT@gmail.com' 
 
password = None 
with open('pass', 'rt') as f: 
    password = f.read().strip('\n') 
 
 
def send_mail(recipient, subject, body): 
    """ 
    Send happy bithday mail 
    """ 
    headers = ["From: " + sender, 
               "Subject: " + subject, 
               "To: " + recipient, 
               "MIME-Version: 1.0", 
               "Content-Type: text/html"] 
 
    headers = "\r\n".join(headers)  
 
    smtp = smtplib.SMTP(SMTP_SERVER, SMTP_PORT) 
    smtp.ehlo() 
    smtp.starttls() 
    smtp.ehlo 
    smtp.login(sender, password) 
 
    body = "" + body +"" 
    smtp.sendmail(sender, recipient, headers + "\r\n\r\n" + body) 
    print "Sent to ",  
    print recipient 
 
    smtp.quit() 
 
def send_happybirthday(recipient): 
    body = """Happy birthday to you! 
            \n<br/>From C2k8pro with love 
          """ 
    subject ='[BirthReminder] Happy birthday to you! from C2k8pro' 
    send_mail(recipient, subject, body) 
 
 
def send_notification(all_mails, names): 
    body = """Tomorrow is birthday of %s""" % names 
    send_mail(all_mails, body,  body) 
 
def test_send_mail(): 
 
    notify_body = """Tomorrow is birthday of """ 
    recipients = ['MYBOT@gmail.com'] 
 
    today = datetime.now() 
    format = "%d-%m-%Y" 
    print today 
    today_in_str = datetime.strftime(today, format) 
 
 
def read_csv(): 
    FILENAME = 'mails.csv' 
    reader = csv.reader(open(FILENAME, 'rt'), delimiter=',') 
 
    today = datetime.now() 
    one_day = timedelta(days=1) 
    tomorrow = today + one_day 
 
    all_mails = [] 
    str_format = "%d/%m" 
    str_today = today.strftime(str_format) 
    str_tomorrow = tomorrow.strftime(str_format) 
 
    print 'Today is ', str_today 
    tomorrow_birth = [] 
    for row in reader: 
        name = row[1].strip() 
        dob = row[2] 
        dmy = dob.split("/") 
        mail = row[3] 
        all_mails.append(mail) 
 
        #TODO fix dob with only 1 digit 
        birth_date = dmy[0] + "/" + dmy[1] 
        if str_today == birth_date: 
            print 'Happy birthday %s' % name 
 
            try: 
                send_happybirthday(mail) 
            except Exception, e: 
                print e 
 
        elif str_tomorrow == birth_date: 
            tomorrow_birth.append(name) 
            print "Tomorrow is %s's birthday" % name 
 
    # Remove empty string 
    all_mails = filter(None, all_mails) 
    print 'All mails: ', len(all_mails) 
    str_all_mails = ', '.join(all_mails) 
 
    if tomorrow_birth: 
        all_tomorrow = ', '.join(tomorrow_birth) 
        send_notification(str_all_mails, all_tomorrow) 
 
 
def main(): 
    read_csv() 
 
if __name__ == "__main__": 
    main() 

谁能解释一下。谢谢!

请您参考如下方法:

我从这里找到了解决方案

Send Email to multiple recipients from .txt file with Python smtplib

我向 msg['To'] 和 sendmail() 传递了一个包含以逗号分隔的所有收件人的字符串。 对于 msg['To'] 是正确的，但是对于 sendmail，我必须使用列表。