【蜂邮EDM】：邮件群发系统，EDM邮件营销平台，邮件代发服务。 查看价格
【AokSend邮件API】：触发式邮件API，15元/万封，99%送达率。 查看价格
【烽火邮箱】：新人领取免费域名邮箱，可用作企业邮箱公司邮箱。 查看价格

使用Python发送邮件的9大常见问题

引言

在现代办公和商业环境中，发送邮件仍然是最常用的沟通方式之一。随着技术的发展，越来越多的人选择使用Python编程语言来自动化处理邮件发送任务。然而，尽管Python提供了丰富的库和工具，如mail subscribers、PyMailer和sendgrid，在实际操作中仍然会遇到各种问题。本文将深入探讨使用Python发送邮件时可能遇到的9大常见问题，并提供相应的解决方案。

1. 安装依赖库时遇到的问题

在使用Python发送邮件之前，需要安装一些必要的库和工具。例如，mail subscribers 是一个非常流行的邮件发送库，而 PyMailer 和 sendgrid 也是常用的工具。然而，初学者在安装这些库时可能会遇到一些问题。

1.1 问题：无法安装依赖库

如果无法成功安装依赖库，可能是因为以下原因：

• 缺少Python环境：如果用户没有安装Python环境，或者Python版本不兼容，可能导致依赖库无法安装。
• 缺少系统依赖：例如，安装mail subscribers需要依赖subprocess和mailbox等库，这些系统依赖可能需要额外安装。

1.2 解决方案

• 确保安装了完整的Python环境，包括Python3.6或更高版本。
• 使用以下命令安装依赖库：

  pip install -r requirements.txt

  其中requirements.txt是一个包含所有依赖库的文件。

  

  🔔🔔🔔

  【烽火邮箱】：烽火邮箱是一款简洁高效的企业邮箱平台，新客户赠送免费企业邮箱，一个起卖、按月付费（低至9.9元）；支持别名邮箱及群组邮箱，支持定制无限邮箱。高权重纯净IP池，系统自带反垃圾机制。
  立即查看 >> ：企业邮箱价格

  
  

  【蜂邮EDM】：邮件群发系统，EDM邮件营销平台，邮件代发服务，专业研发定制邮件营销系统及邮件群发解决方案！蜂邮自研产品线主要分为标准版、外贸版、企业版、定制版，及邮件API邮件SMTP接口服务。
  立即查看 >> ：邮件发送价格

  
  

  【AokSend邮件API】：专注触发式邮件API发送服务。15元/万封，发送验证码邮件、忘记密码邮件、通知告警邮件等，不限速。综合送达率99%、进箱率98%。触发邮件也叫事务性邮件或推送邮件，包含：验证码邮件、重置密码邮件、余额提醒邮件、会员到期邮件、账号认证邮件等！
  立即查看 >> ：邮件发送价格

  🔔🔔🔔
  
  

1.3 示例代码

以下是一个简单的示例，说明如何在Python中安装依赖库：

# 安装依赖库pip install -r requirements.txt

2. 邮件发送失败的原因

在使用Python发送邮件时，最常见的情况是邮件发送失败。以下是一些可能导致邮件发送失败的原因。

2.1 问题：SMTP服务器连接失败

SMTP（Simple Mail Transfer Protocol）是邮件发送的基础协议，用于将邮件从发送者发送到接收者。如果SMTP服务器连接失败，邮件将无法发送。

2.2 解决方案

• 检查SMTP服务器的配置，确保发送者地址和接收者地址正确。
• 确保SMTP服务器的端口和用户名、密码设置正确。
• 如果使用的是sendgrid，可以通过设置SENDGRID_API_KEY环境变量来解决连接问题。

2.3 示例代码

以下是一个使用sendgrid发送邮件的示例代码：

from sendgrid import SendGridimport ossg = SendGrid(os.getenv('SENDGRID_API_KEY'))from sendgrid import exceptionstry:    response = sg.send([        {            'to': 'receiver@example.com',            'from': 'sender@example.com',            'subject': 'Test Email',            'body': 'This is a test email.'        }    ])    print("Email sent successfully!")except exceptions.SendGridException as e:    print(f"Failed to send email: {str(e)}")

3. 邮件内容格式不符合要求

在一些邮件发送平台上（如sendgrid），邮件内容必须符合特定的格式和编码要求。如果格式不正确，邮件可能会被拦截或拒收。

3.1 问题：邮件内容包含非文本字符

如果邮件内容包含特殊字符（如&、<、>等），这些字符需要在邮件客户端或服务器中进行编码。

3.2 解决方案

• 将邮件内容转换为UTF-8编码。
• 使用mail subscribers中的Encoding类来处理编码问题。

3.3 示例代码

以下是一个使用mail subscribers发送邮件的示例代码：

import mailboxfrom mailbox import mailbox, add_msg, delete_msg, delete mbox, get mbox, save mailbox, open mailbox, copy mailbox, backup mailbox, \    compose, compose_array, compose_from_string, compose_from_list, compose_to_string, compose_to_list, \    read mbox, read compose, read compose_array, read compose_from_string, read compose_from_list, \    parse mbox, parse compose, parse compose_array, parse compose_from_string, parse compose_from_list, \    prepare mbox, prepare compose, prepare compose_array, prepare compose_from_string, prepare compose_from_list, \    save mbox, save compose, save compose_array, save compose_from_string, save compose_from_list, \    send compose, send compose_array, send compose_from_string, send compose_from_list, send mbox, \    view compose, view compose_array, view compose_from_string, view compose_from_list, view mbox, \    compose_from_string_to_string, compose_from_list_to_string, compose_to_string_from_string, compose_to_list_from_string, \    compose_to_string_from_list, compose_to_string_from_string, compose_to_list_from_string, compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send compose_to_string_from_list, send compose_to_list_from_list, \    send compose_to_string_from_string, send compose_to_list_from_string, send

【蜂邮EDM】：邮件群发系统，EDM邮件营销平台，邮件代发服务。 查看价格
【AokSend邮件API】：触发式邮件API，15元/万封，99%送达率。 查看价格
【烽火邮箱】：新人领取免费域名邮箱，可用作企业邮箱公司邮箱。 查看价格