(Delphi ActiveX) Access Attached Message (Embedded Email)

How to access an email embedded within another email (i.e. an attached message).

Note: This example requires Chilkat v11.0.0 or greater.

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
success: Integer;
email: TChilkatEmail;
numAttached: Integer;
email2: TChilkatEmail;

begin
success := 0;

email := TChilkatEmail.Create(Self);

// Load an email from a .eml
success := email.LoadEml('embeddedEmail.eml');
if (success = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

// Display how many attached emails are embedded within
// this one:
numAttached := email.NumAttachedMessages;
Memo1.Lines.Add('numAttached = ' + IntToStr(numAttached));

// Get the 1st attached message.
email2 := TChilkatEmail.Create(Self);
success := email.GetAttachedEmail(0,email2.ControlInterface);
if (success = 1) then
  begin

    // Display the subject, From, and a header field...
    Memo1.Lines.Add(email2.Subject);
    Memo1.Lines.Add(email2.From);
    Memo1.Lines.Add(email2.GetHeaderField('X-SOMETHING'));
  end;
end;