(Delphi DLL) Get SpamAssassin Score for an Email

Uses Postmark’s spam API (a RESTfull interface to the SpamAssassin filter tool) to analyze an email to get a spam score.

Chilkat for Delphi Downloads

Chilkat non-ActiveX DLL for Delphi

Chilkat ActiveX DLL for Delphi

* The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, Email, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
email: HCkEmail;
json: HCkJsonObject;
http: HCkHttp;
resp: HCkHttpResponse;

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

// First build an email to check.
email := CkEmail_Create();
CkEmail_putSubject(email,'this is a test');
CkEmail_putFrom(email,'support@chilkatsoft.com');
CkEmail_AddTo(email,'John Doe','john@example.com');
CkEmail_AddPlainTextAlternativeBody(email,'this is a test');
CkEmail_AddHtmlAlternativeBody(email,'<html><body><b>Hello John!</b><p>This is a test</p></body></html>');
success := CkEmail_AddFileAttachment2(email,'qa_data/jpg/starfish.jpg','image/jpeg');

// Check this email by implementing this curl command:

// curl -X POST "https://spamcheck.postmarkapp.com/filter"
// -H "Accept: application/json"
// -H "Content-Type: application/json"
// -v
// -d '{"email":"raw dump of email", "options":"short"}'

json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'email',CkEmail__getMime(email));
CkJsonObject_UpdateString(json,'options','short');

http := CkHttp_Create();
resp := CkHttp_PostJson3(http,'https://spamcheck.postmarkapp.com/filter','application/json',json);
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

Memo1.Lines.Add('response status code = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
Memo1.Lines.Add('response body: ');
Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));

CkHttpResponse_Dispose(resp);

CkEmail_Dispose(email);
CkJsonObject_Dispose(json);
CkHttp_Dispose(http);

end;