用Markdown写邮件，用Python发邮件 python

用Markdown写邮件，用Python发邮件
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平时工作过程中难免要使用邮件，现有的邮件客户端在编辑体验上都不怎么友好，在调整格式时尤其痛苦。以我的有限的人生经验来看，所见即所得的编辑软件往往不如纯文本编辑体验流畅。近些年来，Markdown逐渐成为写作的利器，甚至现在有些出版社也已经接收Markdown手稿。
那么，我们能否使用Markdown来写邮件呢，然后写个Python小脚本去发送邮件呢？
邮件通信的内容使用MIME（Multipurpose Internet Mail Extension)编码，MIME之于邮件客户端类似于html之于浏览器的关系。MIME支持邮件承载多媒体内容，可以把MIME理解为受限的html/css，但是MIME不支持js脚本(安全原因)。
整个程序的工作原理如下图：

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在自己喜欢的Markdown编辑器下编辑markdown文档/邮件记得在markdown文档头部添加formatter

From: foo To: bar Subject: 测试Markdown邮件 ---

配置个人邮箱账号、密码(切记不要在公共电脑存放个人密码，也不要上传到公网) 可以存放到~/.markdown-to-email.json

{ "username": "your_account", "smtp": "smtp.qq.com:587", "password": "your password/authorization code" }

QQ邮箱服务在使用第三方客户端登录时，需要申请授权码。详见：什么是授权码，它又是如何设置？

执行如下的Python代码完整示例，参考git仓库: https://gitee.com/dearyiming/...
本地预览

python markdown_email.py -p --md

注意：mac电脑使用open命令可以直接调用邮箱APP打开预览，其他操作系统可以使用邮箱APP导入邮件(eml文件)去预览
发送邮件

python markdown_email.py -s --md

#!/usr/bin/env python''' Send an multipart email with HTML and plain text alternatives. The message should be constructed as a plain-text file of the following format:From: Your Name To: Recipient One Subject: Your subject line --- Markdown content here The script accepts content from stdin and, by default, prints the raw generated email content to stdout. Preview your message on OS X by invoking the script with `-p` or `--preview`, and it will open in your default mail client. To send the message, invoke with `-s` or `--send`. You must have a JSON file in your home directory named `.markdown-to-email.json` with the following keys: { "username": "smtp-username", "smtp": "smtp.gmail.com:587", "password": "your-password" } Enjoy! '''import os import sys import json import argparse import smtplib import subprocessfrom email.mime.multipart import MIMEMultipart from email.mime.text import MIMETextimport pygments import markdown2 as markdown# define arguments parser = argparse.ArgumentParser(description='Format and send markdown-based emails.', formatter_class=argparse.RawDescriptionHelpFormatter, epilog=__doc__) parser.add_argument('-p', '--preview', action='store_true', help='Preview the email in Apple Mail.') parser.add_argument('-s', '--send', action='store_true', help='Send the email using your configuration.')parser.add_argument('--md', dest='markdown', type=str, nargs=1, required=True) args = parser.parse_args() print(args) # read in raw message content raw_content = open(args.markdown[0], 'r').read()# split out the headers from the markdown message body header_content, markdown_content = raw_content.split('---', 1)# render the markdown into HTML css = subprocess.check_output(['pygmentize', '-S', 'default', '-f', 'html']) markdown_content = markdown_content.strip() html_content = markdown.markdown(markdown_content) html_content = ''.join([ '', str(css), '', html_content ])# create a multipart email message message = MIMEMultipart('alternative')# parse the headers headers = {} for line in header_content.strip().split('\n'): if not line.strip(): continue key, value = https://www.it610.com/article/line.split(':', 1) headers[key.strip()] = value.strip()# set the headers message['To'] = headers.get('To', '') message['From'] = headers.get('From', '') message['Subject'] = headers.get('Subject', 'No subject')# attach the message parts message.attach(MIMEText(markdown_content, 'plain')) # 如果邮件客户端不支持html，显示Markdown源码 message.attach(MIMEText(html_content, 'html')) # 如果邮件客户端支持html，显示Markdown渲染后的htmlif args.send: to = message['To'].split(', ')with open(os.path.expanduser('~/.markdown-to-email.json'), 'rb') as f: config = json.loads(f.read()) server = smtplib.SMTP(config['smtp']) server.starttls() server.login(config['username'], config['password']) server.sendmail(message['From'], to, message.as_string()) server.quit() elif args.preview: email_dump = '/tmp/preview-with-css.eml' open(email_dump, 'w').write(message.as_string()) os.system('open -a Mail {}'.format(email_dump)) else: print(message.as_string())

邮件效果
【用Markdown写邮件，用Python发邮件】