python3 发送邮件的心得，天天发报表的宝宝们看过来！

很久都没有更新博客了，是半年时间作了1个创业项目。失败后总结宝宝我仍是老老实实打工混吃还债吧。 由于长时间作数据运营工做，报表每天见真的很烦。就想一些常规数据软件本身发算了。因而有了这个研究。

就用python3作的一个简单的自动发送脚本。定时发送邮件，还得写一个数据获取的心跳，由于是多个数据源。还有一个重要的东西是plt+pillow绘制数据仪表盘导出放到网站上，感受偷懒技术都要上天了！

本文主要是python发邮件的！测试163，126，qq，阿里邮件推送，均可以用。

#coding=utf-8
import smtplib
import email

from email.mime.text import MIMEText #html格式邮件
from email.mime.multipart import MIMEMultipart #带图片格式邮件
from email.mime.image import MIMEImage #带图片格式邮件

# from email.mime.base import MIMEBase
# from email import encoders

# from email.mime.application import MIMEApplication
from email.header import Header


# 发件人地址，经过控制台建立的发件人地址
username = 'service@nigaea.com'
# 发件人密码，经过控制台建立的发件人密码
password = '*****'
# 自定义的回复地址
replyto = '765854380@qq.com'
# 收件人地址或是地址列表，支持多个收件人，最多30个
#rcptto = ['***', '***']
rcptto = '******'
# 构建alternative结构
msg = MIMEMultipart('alternative')
msg['Subject'] = Header('自定义信件主题', 'utf-8')
msg['From'] = '%s <%s>' % (Header('自定义发信昵称','utf-8'), username)
msg['Reply-to'] = replyto
msg['Message-id'] = email.utils.make_msgid()
msg['Date'] = email.utils.formatdate() 


# 构建alternative的text/plain部分
textplain = "hello world!"
textplain = MIMEText('自定义TEXT纯文本部分','plain','utf-8')
msg.attach(textplain)
# 构建alternative的text/html部分
# texthtml = MIMEText('自定义HTML超文本部分', _subtype='html', _charset='UTF-8')
# msg.attach(texthtml)

# 带附件的邮件MIMEApplication
# filename = ['简历.pdf','副本.pdf']
# fp = open(filename, 'rb')
# attachfile = MIMEApplication(fp.read())
# fp.close()
# attachfile.add_header('Content-Disposition', 'attachment', filename=filename)
# msg.attach(attachfile)
# 带多个附件的邮件MIMEApplication
# filename = ['图片.pdf','副本.pdf']
# for tmp in filename:
#     fp = open(tmp, 'rb')
#     attachfile = MIMEApplication(fp.read())
#     fp.close()
#     attachfile.add_header('Content-Disposition', 'attachment', filename=tmp)
#     msg.attach(attachfile)

#带附件的邮件MIMEBase
# filename = '图片.pdf'
# attachfile = MIMEBase('application', 'octet-stream')  
# attachfile.set_payload(open(filename, 'rb').read())  
# attachfile.add_header('Content-Disposition', 'attachment', filename=('utf-8', '', filename) )  
# encoders.encode_base64(attachfile)  
# msg.attach(attachfile)


# 发送邮件
try:
    client = smtplib.SMTP()
    #python 2.7以上版本，若须要使用SSL，能够这样建立client
    #client = smtplib.SMTP_SSL()
    #SMTP普通端口为25或80
    client.connect('smtpdm.aliyun.com', 25)
    #开启DEBUG模式
    # client.set_debuglevel(0)
    client.login(username, password)
    #发件人和认证地址必须一致
    #备注：若想取到DATA命令返回值,可参考smtplib的sendmaili封装方法:
    #      使用SMTP.mail/SMTP.rcpt/SMTP.data方法
    client.sendmail(username, rcptto, msg.as_string())
    client.quit()
    print('email send success!')
except smtplib.SMTPConnectError as e:
    print('邮件发送失败，链接失败:', e.smtp_code, e.smtp_error)
except smtplib.SMTPAuthenticationError as e:
    print('邮件发送失败，认证错误:', e.smtp_code, e.smtp_error)
except smtplib.SMTPSenderRefused as e:
    print('邮件发送失败，发件人被拒绝:', e.smtp_code, e.smtp_error)
except smtplib.SMTPRecipientsRefused as e:
    print('邮件发送失败，收件人被拒绝:', e.smtp_code, e.smtp_error)
except smtplib.SMTPDataError as e:
    print('邮件发送失败，数据接收拒绝:', e.smtp_code, e.smtp_error)
except smtplib.SMTPException as e:
    print('邮件发送失败, ', e.message)
except Exception as e:
    print('邮件发送异常, ', str(e))

这个是借鉴了阿里云邮件推送服务的实例，感受几乎已经很好解决所需的问题。含ssl的解决方式、多个附件的、带图片的、html格式的，邮件错误类型等。能够后续自行发挥了。

做为脚本测试的化上面就已经够了，但是要天天更新数据自行发邮件还须要更多操做。网上搜索了一个很不错的类的写法，能够参考一下：

import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.base import MIMEBase
from email import encoders

class mailsender(object):
	_from = None
	_attachments = []

	def __init__(self, smtpsvr, port):
		self.smtp = smtplib.SMTP()
		print("connecting....")
		self.smtp.connect(smtpsvr, port)
		print("connected!")

	def login(self, user, pwd):
		self._from = user
		print("login ...")
		self.smtp.login(user, pwd)

	def add_attachment(self, filename):
		att = MIMEBase('application', 'octet-stream')
		att.set_payload(open(filename,'rb').read())
		att.add_header('Content-Disposition', 'attachment', filename = ('gbk','',filename))
		encoders.encode_base64(att)
		self._attachments.append(att)

	def send(self, subject, content, to_addr):
		msg = MIMEMultipart('alternative')
		contents = MIMEText(content, 'html', _charset ='utf-8')
		msg['subject'] = subject
		msg['from'] = self._from
		msg['to'] = to_addr
		for att in self._attachments:
			msg.attach(att)
		msg.attach(contents)
		try:
			self.smtp.sendmail(self._from, to_addr, msg.as_string())
			return True
		except Exception as e:
			print(str(e))
			return False
	def close(self):
		self.smtp.quit
		print("logout!")

mail = mailsender('smtp.163.com','25')
mail.login('nigaea@163.com','******')
mail.add_attachment('简.pdf')
mail.send('hello test','试','buwangyouxil@163.com')
mail.close()

个人博客地址：https://www.nigaea.com/programmer/162.html