How Can I Read Emails Using POP3 in C# with Unicode Support?

Read emails using C# and POP3 protocol

Question:

How to read email using C#?

Background:

• I need to use C# 2.0.
• The solution I am currently using is not ideal as it does not support Unicode emails.

Answer:

A reliable solution is to use the OpenPop.NET library. Here’s how to use it:

1. Install the library: Using NuGet, run the following command:

<code>Install-Package OpenPop.NET</code>

2. Create POP3 client:

<code class="language-csharp">using OpenPop.Pop3;
...
Pop3Client client = new Pop3Client();</code>

3. Connect to POP3 server:

<code class="language-csharp">client.Connect("pop.example.com", 110, false); // 使用SSL进行安全连接</code>

4. User Authentication:

<code class="language-csharp">client.Authenticate("用户名", "密码");</code>

5. Read email:

<code class="language-csharp">IList<Pop3Message> messages = client.GetMessages();
foreach (Pop3Message message in messages)
{
    // 获取邮件头信息
    Console.WriteLine("主题: {0}", message.Headers.Subject);

    // 获取邮件正文（包括附件）
    message.Load();
    Console.WriteLine("正文: {0}", message.MessagePart.BodyAsText);

    // 将邮件保存到本地文件
    message.SaveToFile("email.txt");
}</code>

6. Release client resources:

<code class="language-csharp">client.Dispose();</code>

Note: To support Unicode, please make sure your system supports UTF-8 encoding.

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