Pascal (Lazarus/Delphi)
Send HTML Email with Embedded Image Loaded from Memory

Demonstrates how to compose an HTML email with an embedded image where the image data is loaded directly from memory.
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Pascal (Lazarus/Delphi)
program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.MailMan,
  Chilkat.FileAccess,
  Chilkat.StringBuilder,
  Chilkat.Email;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  fac: TFileAccess;
  imageBytes: TBytes;
  mailman: TMailMan;
  email: TEmail;
  contentIdStarfish: string;
  sbHtml: TStringBuilder;
  numReplacements: Integer;

begin
  success := False;

  //  This example requires the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  //  First load image data into memory.
  //  This example loads image data from a file.
  //  However, your application could get the image data from any other source, such as
  //  from a database.
  fac := TFileAccess.Create;

  imageBytes := fac.ReadEntireFile('qa_data/jpg/starfish.jpg');

  //  The mailman object is used for sending and receiving email.
  mailman := TMailMan.Create;

  //  Use your SMTP server hostname.  This example uses office365, but it could be any SMTP server..
  mailman.SmtpHost := 'outlook.office365.com';
  mailman.SmtpPort := 587;
  mailman.StartTLS := True;

  //  Set the SMTP login/password
  mailman.SmtpUsername := 'OFFICE365-SMTP-LOGIN';
  mailman.SmtpPassword := 'OFFICE365-SMTP-PASSWORD';

  //  Create a new email object
  email := TEmail.Create;
  email.Subject := 'HTML Email with Image Loaded from In-Memory Bytes';
  email.From := 'Chilkat Support <my-office365-user@mydomain.com>';
  email.AddTo('Chilkat Support','support@chilkatsoft.com');

  contentIdStarfish := email.AddRelatedData('starfish.jpg',imageBytes);
  if (email.LastMethodSuccess <> True) then
    begin
      WriteLn(email.LastErrorText);
      Exit;
    end;

  //  The src attribute for the image tag is set to the contentIdStarfish:
  sbHtml := TStringBuilder.Create;
  sbHtml.Append('<html><body><p>This is an HTML email with an embedded image.</p>');
  sbHtml.Append('<p><img src="cid:CONTENT_ID_STARFISH" /></p></body></html>');
  numReplacements := sbHtml.Replace('CONTENT_ID_STARFISH',contentIdStarfish);

  email.SetHtmlBody(sbHtml.GetAsString());

  success := mailman.SendEmail(email);
  if (success <> True) then
    begin
      WriteLn(mailman.LastErrorText);
    end
  else
    begin
      WriteLn('Mail Sent!');
    end;


  fac.Free;
  mailman.Free;
  email.Free;
  sbHtml.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.