.NET使用MailKit进行邮件处理的方法步骤_实用技巧_

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

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

 client.Authenticate(MAIL_NAME, MAIL_PASSWORD); 

 client.Inbox.Open(FolderAccess.ReadWrite); 

 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); 

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

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

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

 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); } } 

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

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