Delphi ActiveX

Attach a File to an Email

Demonstrates the Chilkat Email.AddFileAttachment method, which attaches a file read from the filesystem. It returns the content type Chilkat assigned to the attachment (inferred from the file extension). This example attaches a PDF and prints its detected content type.

Background: Each attachment carries a Content-Type (MIME type) such as application/pdf or image/png that tells the receiving client how to handle it. Chilkat gets this from the file's extension. Because attachment bytes are binary, they are Base64-encoded for transport, which is handled automatically — you simply point AddFileAttachment at a path and the file is read, encoded, and packaged into the message.

Chilkat Delphi ActiveX Downloads

Download Chilkat for Delphi ActiveX

Delphi ActiveX

var
email: TChilkatEmail;
contentType: WideString;

begin
//  Demonstrates the AddFileAttachment method, which attaches a file read from the
//  filesystem.  It returns the content type Chilkat assigned to the attachment (based on
//  the file extension), or returns failure if the file could not be read.

email := TChilkatEmail.Create(Self);
email.Subject := 'Email with a file attachment';
email.Body := 'Please see the attached file.';

//  Attach a file.  The return value is the auto-detected content type.
contentType := email.AddFileAttachment('qa_data/attachments/report.pdf');
if (email.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Attached content type = ' + contentType);
Memo1.Lines.Add('NumAttachments = ' + IntToStr(email.NumAttachments));

//  Note: The path "qa_data/attachments/report.pdf" is a relative local filesystem path,
//  relative to the current working directory of the running application.