发送邮件的时候，需要发送人，收件人，和一台邮件服务器，这里使用python发送一个邮件，主要需要引入smtplib和email库。
下面是源码，粘贴即可用：

#!/usr/bin/env python3
# coding: utf-8
import smtplib
import time
import sys
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart# 发送邮件
def SendMail(mail_list, subject, content):from_mail = '这里填入发件人邮箱'temp_msg = '武松申请了车费报销'msg = MIMEText('</pre><p>' + temp_msg + '</p><a href="/agree">同意</a>,<a href="/disagree">不同意</a><pre>', 'html','utf-8')msg['Subject'] = subjectmsg['From'] = from_mailmsg['To'] = mail_listmsg['date'] = time.strftime('%a, %d %b %Y %H:%M:%S %z')smtp_server = '这里填入邮件服务器的地址's = smtplib.SMTP(smtp_server)s.login("填入登录邮件服务器的邮箱", "填入邮箱密码")s.sendmail(from_mail, mail_list.split(","), msg.as_string())s.quit()# 发送邮件带附件
def SendMailWithAttachment(mail_list, subject, content, attachment):from_mail = '这里填入发件人邮箱'msg = MIMEMultipart()msg['Subject'] = subjectmsg['From'] = from_mailmsg['To'] = mail_listmsg['date'] = time.strftime('%a, %d %b %Y %H:%M:%S %z')msg.attach(MIMEText(content, 'html', 'utf-8'))att = MIMEText(open(attachment, 'rb').read(), 'base64', 'utf8')att["Content-Type"] = 'application/octet-stream'att["Content-Disposition"] = 'attachment; filename="%s"' % attachmentmsg.attach(att)smtp_server = '这里填入邮件服务器的地址's = smtplib.SMTP(smtp_server)s.login("填入登录邮件服务器的邮箱", "填入邮箱密码")s.sendmail(from_mail, mail_list.split(","), msg.as_string())s.quit()if __name__ == '__main__':if len(sys.argv) < 4:print('Usage:', sys.argv[0], ' mail_list subject content [attachment]')sys.exit(1)content = ""if len(sys.argv) == 4:SendMail(sys.argv[1], sys.argv[2], content)else:SendMailWithAttachment(sys.argv[1], sys.argv[2], content, sys.argv[4])

你需要修改的地方是：

from_mail：发件人信息
temp_msg：发送的内容
smtp_server：邮件服务器地址
s.login：邮件服务器登录名和密码

命令行发送：
python3 sendmail.py '772654204@qq.com' 'python send mail' 'leran is fun'

显示效果：