---
title: Python发信示例
date: 2022-05-31 11:31:44.524
updated: 2023-02-13 21:38:40.253
url: /archives/python-fa-xin-shi-li
categories: 
- Python
tags: 
- Python
---


> 当前Python环境版本为**3.9**
# 无附件示例
```python
import smtplib
from email.mime.text import MIMEText
from email.utils import formatdate
from email.header import Header
import sys
import importlib
# 设置默认字符集为UTF8

default_encoding = 'utf-8'
if sys.getdefaultencoding() != default_encoding:
    importlib.reload(sys)
    sys.setdefaultencoding(default_encoding)

# 发送邮件的相关信息(根据实际情况填写)
smtpHost = ''
smtpPort = '25'
sslPort = '465'
fromMail = ''
toMail = 'rember1997@163.com'
username = ''
password = ''

# 邮件标题和内容
subject = u'白云间的测试邮件'
body = u'Hello，这是一封测试邮件' + fromMail

# 初始化邮件
encoding = 'utf-8'
mail = MIMEText(body.encode(encoding), 'plain', encoding)
mail['Subject'] = Header(subject, encoding)
mail['From'] = fromMail
mail['To'] = toMail
mail['Date'] = formatdate()

try:
    # 连接smtp服务器，明文/SSL方式，根据使用的SMTP支持情况选择一种
    # 普通方式，通信过程不加密
    # smtp = smtplib.SMTP(smtpHost,smtpPort)
    # smtp.ehlo()
    # smtp.login(username,password)
    #
    # 纯粹的ssl加密方式，通信过程加密，邮件数据安全
    # smtp = smtplib.SMTP(smtpHost, smtpPort)
    smtp = smtplib.SMTP_SSL(smtpHost, sslPort)
    smtp.ehlo()
    smtp.login(username, password)

    # 发送邮件
    smtp.sendmail(fromMail, toMail, mail.as_string())
    smtp.close()
    print('OK')
except Exception as e:
    print(e)
```

# 邮件上传附件示例
```python
import smtplib
import time
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.header import Header
localtime = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())

# 发送邮件的相关信息，根据实际情况填写
smtpHost = ''
smtpPort = '25'
sslPort = '465'
username = 'rember1997@163.com'
password = ''
fromMail = 'rember1997@163.com'
toMail = ''
subject = '白云间的SMTP邮件测试'
body = '邮件发送测试\n \nby Python\n \n' + localtime
encoding = 'utf-8'

# 创建
mail = MIMEMultipart()
mail['Subject'] = Header(subject, encoding)
mail['From'] = Header("rember1997@163.com")
mail['To'] = Header("byj@hz-qj.com")

# 正文内容
mail.attach(MIMEText(body, 'plain', 'utf-8'))

# 构造附件1，上传当前目录下 test.txt 文件
att1 = MIMEText(open('test.txt', 'rb').read(), 'base64', 'utf-8')
att1["Content-Type"] = 'application/octet-stream'
# filename即为邮件中附件的显示名称
att1["Content-Disposition"] = 'attachment; filename="test.txt"'
mail.attach(att1)
# 构造附件2，传送当前目录下的 29M.zip 文件
att2 = MIMEText(open('29M.zip', 'rb').read(), 'base64', 'utf-8')
att2["Content-Type"] = 'application/octet-stream'
att2["Content-Disposition"] = 'attachment; filename="29M.zip"'
mail.attach(att2)


try:
    # 连接smtp服务器，明文/SSL方式，根据使用的SMTP支持情况选择一种
    # 普通方式，通信过程不加密
    smtp = smtplib.SMTP(smtpHost, smtpPort)
    smtp.ehlo()
    smtp.login(username, password)

    # # 纯粹的ssl加密方式，通信过程加密，邮件数据安全
    # # smtp = smtplib.SMTP(smtpHost, smtpPort)
    # smtp = smtplib.SMTP_SSL(smtpHost, sslPort)
    # smtp.ehlo()
    # smtp.login(username, password)

    # 发送邮件
    smtp.sendmail(fromMail, toMail, mail.as_string())
    smtp.close()
    print('OK')

except Exception as e:
    print(e)
```