Delphi DLL

Check Whether an Email Is a multipart/report

Demonstrates the Chilkat Email.IsMultipartReport method, which returns true when the top-level message structure is a multipart/report (such as a bounce/DSN or a read receipt/MDN). This example loads an email and reports whether it is a multipart/report.

Background: Automated mail — delivery failures and read receipts — arrives wrapped in the multipart/report structure, which carries machine-readable report parts. Detecting it with IsMultipartReport is the first step in a bounce-handling pipeline: once you know a message is a report, you can pull its parts with GetReport or read delivery fields with GetDeliveryStatusInfo to act on failures automatically.

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var
success: Boolean;
email: HCkEmail;

begin
success := False;

//  Demonstrates the IsMultipartReport method, which returns true if the top-level message
//  structure is a multipart/report (such as a bounce / DSN or a read receipt / MDN).

email := CkEmail_Create();

success := CkEmail_LoadEml(email,'qa_data/eml/dsn_bounce.eml');
if (success = False) then
  begin
    Memo1.Lines.Add(CkEmail__lastErrorText(email));
    Exit;
  end;

if (CkEmail_IsMultipartReport(email) = True) then
  begin
    Memo1.Lines.Add('This email is a multipart/report (e.g. a bounce or read receipt).');
  end
else
  begin
    Memo1.Lines.Add('This email is not a multipart/report.');
  end;

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

CkEmail_Dispose(email);