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. Delphi ActiveX

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;
email: TChilkatEmail;
uid: Integer;
isUid: 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;

email := TChilkatEmail.Create(Self);

uid := 2014;
isUid := 1;

success := imap.FetchEmail(0,uid,isUid,email.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(imap.LastErrorText);
    Exit;
  end;

// 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.ControlInterface);
Memo1.Lines.Add(IntToStr(numAttach));

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

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

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