Pascal (Lazarus/Delphi)

Remove the Plain-Text Body from an Email

Demonstrates the Chilkat Email.RemovePlainTextAlternative method, which removes the plain-text body from the email if one exists. Other body representations, attachments, and related items remain unchanged. This example builds a message with both plain-text and HTML alternatives, then removes the plain text.

Background: This is the counterpart to RemoveHtmlAlternative. Removing the plain-text alternative leaves an HTML-only message. Note that dropping the plain-text fallback is generally discouraged for real mail — it hurts accessibility and can raise spam scores — but it is occasionally needed when a downstream system expects a single HTML representation.

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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.Email;

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

procedure RunDemo;
var
  email: TEmail;

begin
  //  Demonstrates the RemovePlainTextAlternative method, which removes the plain-text body
  //  from the email (if one exists).  Other body representations, attachments, and related
  //  items remain.

  email := TEmail.Create;
  email.Subject := 'Remove plain-text alternative';

  //  Create an email with both plain-text and HTML alternatives.
  email.SetTextBody('This is the plain-text version.','text/plain');
  email.AddHtmlAlternativeBody('<html><body>This is the HTML version.</body></html>');
  WriteLn('NumAlternatives before = ' + email.NumAlternatives);
  WriteLn('HasPlainTextBody before: ' + email.HasPlainTextBody());

  //  Remove the plain-text body, leaving the HTML alternative.
  email.RemovePlainTextAlternative();
  WriteLn('NumAlternatives after = ' + email.NumAlternatives);
  WriteLn('HasPlainTextBody after: ' + email.HasPlainTextBody());


  email.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.