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(Delphi ActiveX) Read IMAP Email HeadersCall FetchHeaders to download only the email headers. Note: This example requires Chilkat v11.0.0 or greater.
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB; ... procedure TForm1.Button1Click(Sender: TObject); var success: Integer; imap: TChilkatImap; fetchUids: Integer; messageSet: TMessageSet; bundle: TChilkatEmailBundle; headersOnly: Integer; email: TChilkatEmail; name: WideString; addr: WideString; i: Integer; j: Integer; numAttach: Integer; attachSize: Integer; begin success := 0; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. imap := TChilkatImap.Create(Self); // Connect to an IMAP server. // Use TLS imap.Ssl := 1; imap.Port := 993; success := imap.Connect('imap.example.com'); if (success = 0) then begin Memo1.Lines.Add(imap.LastErrorText); Exit; end; // Login success := imap.Login('****','****'); if (success = 0) then begin Memo1.Lines.Add(imap.LastErrorText); Exit; end; // Select an IMAP mailbox success := imap.SelectMailbox('Inbox'); if (success = 0) then begin Memo1.Lines.Add(imap.LastErrorText); Exit; end; // Get the message IDs of all the emails in the mailbox // We can choose to fetch UIDs or sequence numbers. fetchUids := 1; messageSet := TMessageSet.Create(Self); success := imap.QueryMbx('ALL',fetchUids,messageSet.ControlInterface); if (success = 0) then begin Memo1.Lines.Add(imap.LastErrorText); Exit; end; // When downloading headers, each email object contains // (obviously) the headers, but the body will be missing. // Also, attachments will not be included. However, it is // possible to get information about the attachments // as well as the complete size of the email. bundle := TChilkatEmailBundle.Create(Self); headersOnly := 1; success := imap.FetchMsgSet(headersOnly,messageSet.ControlInterface,bundle.ControlInterface); if (success = 0) then begin Memo1.Lines.Add(imap.LastErrorText); Exit; end; // Loop over the email objects and display information // about each: email := TChilkatEmail.Create(Self); i := 0; j := 0; while i < bundle.MessageCount do begin bundle.EmailAt(i,email.ControlInterface); // Display the From and Subject Memo1.Lines.Add(email.From); Memo1.Lines.Add(email.Subject); // Display the recipients: j := 0; while j < email.NumTo do begin Memo1.Lines.Add('TO: ' + email.GetToName(j) + ', ' + email.GetToAddr(j)); j := j + 1; end; j := 0; while j < email.NumCC do begin Memo1.Lines.Add('CC: ' + email.GetCcName(j) + ', ' + email.GetCcAddr(j)); j := j + 1; end; // Show the total size of the email, including body and attachments: Memo1.Lines.Add(IntToStr(email.Size)); // When a full email is downloaded, we would use the // email.NumAttachments property in conjunction with the // email.GetMailAttach* methods. // However, when an email object contains only the header, // we need to access the attachment info differently: numAttach := imap.GetMailNumAttach(email.ControlInterface); j := 0; while j < numAttach do begin Memo1.Lines.Add(imap.GetMailAttachFilename(email.ControlInterface,j)); attachSize := imap.GetMailAttachSize(email.ControlInterface,j); Memo1.Lines.Add(' size = ' + IntToStr(attachSize) + ' bytes'); j := j + 1; end; Memo1.Lines.Add('--'); end; // Disconnect from the IMAP server. success := imap.Disconnect(); end; |
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