使用c#.net librarires检查来自gmail服务器的IMAP消息

Question

有没有人有任何示例代码使用通过IMAP SSL连接到googlemail服务器的.Net框架来检查新电子邮件？

Answer 1

您可能会对此处列出的URL感兴趣

http://www.codeplex.com/InterIMAP

这是扩展到

http://www.codeproject.com/KB/IP/imaplibrary.aspx?fid=91819&df=90&mpp=25&noise=5&sort=Position&view=Quick&fr=26&select=2562067#xx2562067xx

Answer 2

我建议看MailKit,因为它可能是最强大的邮件库,它是开源(MIT).

关于MailKit的一个很棒的事情是所有网络API都是可取消的(我在任何其他IMAP库中都没有看到过).

它也是我所知道的唯一支持消息线程的库.

using System;
using System.Net;
using System.Threading;

using MailKit.Net.Imap;
using MailKit.Search;
using MailKit;
using MimeKit;

namespace TestClient {
    class Program
    {
        public static void Main (string[] args)
        {
            using (var client = new ImapClient ()) {
                using (var cancel = new CancellationTokenSource ()) {
                    client.Connect ("imap.gmail.com", 993, true, cancel.Token);

                    // If you want to disable an authentication mechanism,
                    // you can do so by removing the mechanism like this:
                    client.AuthenticationMechanisms.Remove ("XOAUTH");

                    client.Authenticate ("joey", "password", cancel.Token);

                    // The Inbox folder is always available...
                    var inbox = client.Inbox;
                    inbox.Open (FolderAccess.ReadOnly, cancel.Token);

                    Console.WriteLine ("Total messages: {0}", inbox.Count);
                    Console.WriteLine ("Recent messages: {0}", inbox.Recent);

                    // download each message based on the message index
                    for (int i = 0; i < inbox.Count; i++) {
                        var message = inbox.GetMessage (i, cancel.Token);
                        Console.WriteLine ("Subject: {0}", message.Subject);
                    }

                    // let's try searching for some messages...
                    var query = SearchQuery.DeliveredAfter (DateTime.Parse ("2013-01-12"))
                        .And (SearchQuery.SubjectContains ("MailKit"))
                        .And (SearchQuery.Seen);

                    foreach (var uid in inbox.Search (query, cancel.Token)) {
                        var message = inbox.GetMessage (uid, cancel.Token);
                        Console.WriteLine ("[match] {0}: {1}", uid, message.Subject);
                    }

                    client.Disconnect (true, cancel.Token);
                }
            }
        }
    }
}

Answer 3

作为上述项目的作者,我可以说它确实支持SSL.

我目前正在开发一个新版本的库,它将完全异步,以提高它与IMAP服务器交互的速度.

该代码虽然不完整,但可以从链接到上面的代码plex站点下载原始同步库(也支持SSL).

Answer 4

Cross从其他类似问题发布.看看当它们如此相似时会发生什么？

我一直在寻找IMAP解决方案一段时间,经过不少尝试后,我将选择AE.Net.Mail.

没有文档,我认为这是一个缺点,但我能够通过查看源代码(yay for open source!)和使用Intellisense来提升它.以下代码专门连接到Gmail的IMAP服务器:

// Connect to the IMAP server. The 'true' parameter specifies to use SSL
// which is important (for Gmail at least)
ImapClient ic = new ImapClient("imap.gmail.com", "name@gmail.com", "pass",
                ImapClient.AuthMethods.Login, 993, true);
// Select a mailbox. Case-insensitive
ic.SelectMailbox("INBOX");
Console.WriteLine(ic.GetMessageCount());
// Get the first *11* messages. 0 is the first message;
// and it also includes the 10th message, which is really the eleventh ;)
// MailMessage represents, well, a message in your mailbox
MailMessage[] mm = ic.GetMessages(0, 10);
foreach (MailMessage m in mm)
{
    Console.WriteLine(m.Subject);
}
// Probably wiser to use a using statement
ic.Dispose();

我不隶属于这个库或任何东西,但我发现它非常快速和稳定.

Answer 5

Lumisoft.net有你可以使用的IMAP客户端和服务器代码.

我用它来从Gmail下载电子邮件.对象模型不是最好的,但它是可行的,并且似乎相当灵活和稳定.

这是我使用它的尖峰的部分结果.它使用信封获取前10个标题,然后获取完整的消息:

using (var client = new IMAP_Client())
{
    client.Connect(_hostname, _port, _useSsl);
    client.Authenticate(_username, _password);
    client.SelectFolder("INBOX");
     var sequence = new IMAP_SequenceSet();
    sequence.Parse("0:10");
    var fetchItems = client.FetchMessages(sequence, IMAP_FetchItem_Flags.Envelope | IMAP_FetchItlags.UID,
                                        false, true);
    foreach (var fetchItem in fetchItems)
    {
        Console.Out.WriteLine("message.UID = {0}", fetchItem.UID);
        Console.Out.WriteLine("message.Envelope.From = {0}", fetchItem.Envelope.From);
        Console.Out.WriteLine("message.Envelope.To = {0}", fetchItem.Envelope.To);
        Console.Out.WriteLine("message.Envelope.Subject = {0}", fetchItem.Envelope.Subject);
        Console.Out.WriteLine("message.Envelope.MessageID = {0}", fetchItem.Envelope.MessageID);
    }
    Console.Out.WriteLine("Fetching bodies");
    foreach (var fetchItem in client.FetchMessages(sequence, IMAP_FetchItem_Flags.All, false, true)
    {             
        var email = LumiSoft.Net.Mail.Mail_Message.ParseFromByte(fetchItem.MessageData);             
        Console.Out.WriteLine("email.BodyText = {0}", email.BodyText);

    }
}

Answer 6

IMAP没有.NET框架支持.您需要使用一些第三方组件.

试试Mail.dll电子邮件组件,它非常实惠且易于使用,它还支持SSL:

using(Imap imap = new Imap())
{
    imap.ConnectSSL("imap.company.com");
    imap.Login("user", "password");

    imap.SelectInbox();
    List<long> uids = imap.Search(Flag.Unseen);
    foreach (long uid in uids)
    {
        string eml = imap.GetMessageByUID(uid);
        IMail message = new MailBuilder()
            .CreateFromEml(eml);

        Console.WriteLine(message.Subject);
        Console.WriteLine(message.Text);
    }
    imap.Close(true);
}

请注意,这是我创建的商业产品.

您可以在此处下载:https://www.limilabs.com/mail.

Answer 7

MailSystem.NET包含您对IMAP4的所有需求.它是免费和开源的.

(我参与了这个项目)