0.介紹

MimeKit and MailKit are popular fully-featured email frameworks for .NET

框架支援版本如下

Supports .NET 4.5,.NET 4.6,.NET 4.7,.NET 4.8,.NET 5.0,.NETStandard 2.0,Xamarin.Android,Xamarin.iOS,Windows Phone 8.1,and more.

MailKit是最流行且最強大的.NET郵件處理框架之一，下面為大家簡單介紹MailKit的使用方式（IMAP為例）

1. 參考資料

Github https://github.com/jstedfast/MailKit

官方Doc http://www.mimekit.net/docs/html/Introduction.htm

2.核心內容（IMAP為例）

連線郵箱

加密

client.Connect("imap.exmail.qq.com",993,SecureSocketOptions.SslOnConnect);

不加密

client.Connect("imap.exmail.qq.com",143,SecureSocketOptions.None);

登入郵箱

client.Authenticate(MAIL_NAME,MAIL_PASSWORD);

開啟郵件資料夾

client.Inbox.Open(FolderAccess.ReadWrite);

讀取檔案

讀取方式一：可以預先篩選郵件

search for messages where the Subject header contains either "MimeKit" or "MailKit"
  var query = SearchQuery.SubjectContains("MimeKit").Or(SearchQuery.SubjectContains("MailKit"));
  var uids = client.Inbox.Search(query);

讀取方式二：讀取所有郵件

var uids = client.Inbox.Search(SearchQuery.All);

郵件操作

操作郵件一：讀取郵件標題

string subject = message.Subject;
  if (!subject.Contains("MimeKitDemo"))
    return;

操作郵件二：讀取正文

string body = message.TextBody ?? string.Empty;
  if (!body.Contains("MimeKitDemoBody"))
    return;

操作郵件三：下載郵件附件

var attachments = message.Attachments;
  if (attachments.Any())
  {
    foreach (var attachment in attachments)
      DownloadAttachment(attachment);
  }

  private static void DownloadAttachment(MimeEntity attachment)
  {
    if (attachment is MessagePart)
    {
      var fileName = attachment.ContentDisposition?.FileName;
      var rfc822 = (MessagePart)attachment;

      if (string.IsNullOrEmpty(fileName))
        fileName = "attached-message.eml";

      var path = Path.Combine(DIRECTORY,fileName);
      using (var stream = File.Create(path))
        rfc822.Message.WriteTo(stream);
    }
    else
    {
      var part = (MimePart)attachment;
      var fileName = part.FileName;

      var path = Path.Combine(DIRECTORY,fileName);
      using (var stream = File.Create(path))
        part.Content.DecodeTo(stream);
    }
  }

操作郵件四：移動郵件（移動至刪除資料夾）

client.Inbox.MoveTo(uid,client.GetFolder(SpecialFolder.Trash));

操作郵件五：刪除郵件 - 將郵件標記為刪除、最後刪除

client.Inbox.AddFlags(uid,MessageFlags.Deleted,true);
  client.Inbox.Expunge();

3.樣例原始碼地址

https://github.com/Impartsoft/Bins/tree/main/MailKitDemo

到此這篇關於.NET使用MailKit進行郵件處理的方法步驟的文章就介紹到這了,更多相關.NET MailKit郵件處理內容請搜尋我們以前的文章或繼續瀏覽下面的相關文章希望大家以後多多支援我們！