MailKit help class, MailKit

MailKit help class, MailKit

Public class EmailHelp {// <summary> // Smtp server address // </summary> private static readonly string SmtpServer = ConfigurationManager. deleetask[ "SmtpServer"]; // <summary> // Pop server address // </summary> private static readonly string PopServer = ConfigurationManager. deleetask[ "PopServer"]; // <summary> // Imap server address // </summary> private static readonly string ImapServer = ConfigurationManager. A PpSettings ["ImapServer"]; // <summary> // SMTP port // </summary> private static readonly int SmtpPort = int. parse (ConfigurationManager. appSettings ["SmtpPort"]); // <summary> // POP port // </summary> private static readonly int PopPort = int. parse (ConfigurationManager. appSettings ["PopPort"]); // <summary> // IMAP port // </summary> private static readonly int ImapPort = int. parse (ConfigurationMan Ager. appSettings ["ImapPort"]); /// <summary> /// send email /// </summary> /// <param name = "mailFromAccount"> send email account </param> /// <param name = "mailPassword"> send email password </param> // <param name = "message"> email </param> public static void SendEmali (string mailFromAccount, string mailPassword, MimeMessage message) {using (var client = new MailKit. net. smtp. smtpClient () {client. connect (SmtpServer, SmtpPort, false ); // Note: since we don't have an oau2token, disable // the xoau2authentication mechanism. client. authenticationmechanic isms. remove ("xoau2"); // Note: only needed if the SMTP server requires authentication client. authenticate (mailFromAccount, mailPassword); client. send (message); client. disconnect (true );}} /// <summary> /// create a text message /// </summary> /// <param name = "fromAddress"> Sending address </param> /// <Param name = "toAddressList"> recipient address </param> /// <param name = "title"> title </param> /// <param name = "content"> content </param> /// <param name = "IsPostFiles"> Add POST files as attachments </param> /// <returns> </returns> public static MimeMessage CreateTextMessage (MailboxAddress fromAddress, IList <MailboxAddress> toAddressList, string title, string content, bool IsPostFiles = false) {var message = new MimeMessage (); message. From. add (fromAddress); message. to. addRange (toAddressList); message. subject = title; // set the message topic var html = new TextPart ("html") {Text = content,}; var alternative = new Multipart ("alternative"); alternative. add (html); var multipart = new Multipart ("mixed"); multipart. add (alternative); if (IsPostFiles) {IList <MimePart> multiPartList = GetMimePartList (); foreach (var item in multiPartList) {multip Art. add (item) ;}} message. body = multipart; return message ;} /// <summary> /// receive email /// </summary> /// <param name = "mailFromAccount"> email sending account </param> /// <param name = "mailPassword"> send email password </param> /// <param name = "searchQuery"> query condition </param> /// <param name = "folderName"> folder name </param> /// <returns> </returns> public static IList <IMessageSummary> ReceiveEmail (string mailFromAccount, string mailPassword, String folderName, SearchQuery searchQuery = null) {// open the inbox var folder = OpenFolder (mailFromAccount, mailPassword, folderName ); // IList <OrderBy> orderByList = new List <OrderBy> {OrderBy. date}; // query all emails var uidss = folder. search (searchQuery); IList <IMessageSummary> msgList = new List <IMessageSummary> (); if (uidss. count> 0) // determine whether the email is queried {// obtain the email header msgList = folder. fetch (uidss, MessageSummaryItems. UniqueId | MessageSummaryItems. full);} folder. close (); return msgList ;} /// <summary> /// query a letter by unique ID /// </summary> /// <param name = "mailFromAccount"> email account </param> // /<param name = "mailPassword"> email password </param> // <param name = "id"> Unique id </param> /// <param name =" folderName "> folder name </param> // <returns> </returns> public static MimeMessage GetEmailByUniqueId (string mailFromAccount, string mailPassword, ui Nt id, string folderName) {// open the inbox var folder = OpenFolder (mailFromAccount, mailPassword, folderName); UniqueId emailUniqueId = new UniqueId (id); MimeMessage message = folder. getMessage (emailUniqueId);/* set the email to read */MessageFlags flags = MessageFlags. seen; folder. setFlags (emailUniqueId, flags, true); return message ;} /// <summary> /// read the uploaded file /// </summary> /// <returns> </returns> public static ILi St <MimePart> GetMimePartList () {IList <MimePart> mimePartList = new List <MimePart> (); var current = HttpContext. Current; if (current! = Null) {HttpRequest request = current. request; HttpFileCollection files = request. files; int filesCount = files. count; for (int I = 0; I <filesCount; I ++) {HttpPostedFile item = files [I]; MimePart attachment = new MimePart (item. contentType) {ContentObject = new ContentObject (item. inputStream, ContentEncoding. default), ContentDisposition = new ContentDisposition (ContentDisposition. attachment), ContentTransferEncoding = ContentEncoding. base64, FileName = item. fileName}; mimePartList. add (attachment) ;}} return mimePartList ;} /// <summary> /// open the email folder /// </summary> /// <param name = "mailFromAccount"> email account </param> /// <param name = "mailPassword"> email password </param> // <param name = "folderName"> folder name (INBOX: inbox name) </param> // <returns> </returns> public static IMailFolder OpenFolder (string mailFromAccount, string mailPassword, string folderName) {ImapClient client = new ImapClient (); client. connect (ImapServer, ImapPort); client. authenticate (mailFromAccount, mailPassword); // obtain all folders // List <IMailFolder> mailFolderList = client. getFolders (client. personalNamespaces [0]). toList (); var folder = client. getFolder (folderName); // open the folder and set it to the Read mode folder. open (MailKit. folderAccess. readWrite); return folder ;} /// <summary> /// download the email attachment /// </summary> /// <param name = "mimePart"> </param> public static void DownFile (MimePart mimePart) {HttpContext context = HttpContext. current; // set the encoding and attachment format context. response. contentType = mimePart. contentType. toString (); // context. response. contentEncoding = Encoding. UTF8; context. response. charset = ""; string fileName = HttpUtility. urlEncode (mimePart. fileName, Encoding. UTF8); context. response. appendHeader ("Content-Disposition", "attachment; filename =" + fileName); using (MemoryStream MS = new MemoryStream () {mimePart. contentObject. decodeTo (ms); ms. flush (); ms. position = 0; context. response. binaryWrite (ms. getBuffer (); context. response. end ();}}}