(Delphi ActiveX) Fetch Single Email by UID or Sequence Number

Assuming the UID is known, download a single email by UID from an IMAP mail server.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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
imap: TChilkatImap;
success: Integer;
email: IChilkatEmail;
uid: Integer;
isUid: Integer;
j: Integer;
numAttach: Integer;
attachSize: Integer;

begin
// 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.someMailServer.com');
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Login
success := imap.Login('***','***');
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// Select an IMAP mailbox
success := imap.SelectMailbox('Inbox');
if (success <> 1) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

uid := 2014;
isUid := 1;

email := imap.FetchSingle(uid,isUid);
if (imap.LastMethodSuccess = 1) then
  begin

    // Display the From and Subject
    Memo1.Lines.Add(email.FromAddress);
    Memo1.Lines.Add(email.Subject);

    // Display the Body property, which is the default body.
    // If an email has an HTML body, the Body property contains
    // the HTML source.  Otherwise it contains the plain-text
    // body.
    Memo1.Lines.Add('---- EMAIL BODY ----');
    Memo1.Lines.Add(email.Body);
    Memo1.Lines.Add('--------------------');

    // Display the recipients:

    for j := 0 to email.NumTo - 1 do
      begin
        Memo1.Lines.Add(email.GetToName(j) + ', ' + email.GetToAddr(j));
      end;

    for j := 0 to email.NumCC - 1 do
      begin
        Memo1.Lines.Add(email.GetCcName(j) + ', ' + email.GetCcAddr(j));
      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);
    Memo1.Lines.Add(IntToStr(numAttach));

    for j := 0 to numAttach - 1 do
      begin
        Memo1.Lines.Add(imap.GetMailAttachFilename(email,j));
        attachSize := imap.GetMailAttachSize(email,j);
        Memo1.Lines.Add('    size = ' + IntToStr(attachSize) + ' bytes');
      end;

    Memo1.Lines.Add('--');

  end;

// Disconnect from the IMAP server.
success := imap.Disconnect();
end;