OpenPop - Gmail的 - GetMessageCount（）返回0（零） [英] OpenPop - Gmail - GetMessageCount() returns 0 (zero)

问题描述

当连接与OpenPop Gmail时，我只能检索一封电子邮件，即使我不删除它。使用GetMessageCount（）我总是收到0电子邮件。我怎样才能得到一切在那里的电子邮件？

只有阅读他们，他们加工后做给我命令删除。我使用下面的code，以获得电子邮件：

 使用（VAR的客户=新Pop3Client（））
{
    //连接到服务器
    client.Connect（serverData.Hostname，serverData.Port，serverData.UseSsl）;    //验证自己对服务器
    client.Authenticate（serverData.Username，serverData.Password，AuthenticationMethod.UsernameAndPassword）;    VAR emailAmount = client.GetMessageSizes（）计数。    //获取所有观察到的当前的uid
    变种MSGCOUNT = client.GetMessageCount（）;   .....
}
 

解决方案

Gmail是特别即可。看看这个StackOverflow的帖子这也解释了不规范的行为。

你所感兴趣的是，Gmail将只显示消息的 ONE 的POP3会议，除非你做特别的东西，比如prepending的最近的：的您的用户名前面

When connecting to Gmail with OpenPop, I can only retrieve an email once, even if I do not delete it. Using GetMessageCount() I always receive 0 emails. How can I get all the emails that are there?

Only after reading them and processing them do I give order to delete. I am using the following code to get the emails:

using (var client = new Pop3Client())
{
    // Connect to the server
    client.Connect(serverData.Hostname, serverData.Port, serverData.UseSsl);

    // Authenticate ourselves towards the server
    client.Authenticate(serverData.Username, serverData.Password, AuthenticationMethod.UsernameAndPassword);

    var emailAmount = client.GetMessageSizes().Count;

    // Fetch all the current uids seen
    var msgCount = client.GetMessageCount();

   .....
}

解决方案

Gmail is special. Take a look at this StackOverflow post which explains the non-standard behavior.

What you are interested in, is that Gmail will only show a message in ONE POP3 session, unless you do special stuff, like prepending recent: in front of your username.

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