Delphi ActiveX
Create GMail Draft

Demonstrates how to create a new GMail draft email.
Chilkat Delphi ActiveX Downloads

Delphi ActiveX
uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
email: TChilkatEmail;
sbMime: TChilkatStringBuilder;
json: TChilkatJsonObject;
http: TChilkatHttp;
url: WideString;
resp: TChilkatHttpResponse;

begin
success := 0;

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

// Use the Chilkat Email API to create or load an email.
email := TChilkatEmail.Create(Self);
email.Subject := 'This is a test GMail email created using Chilkat.';
email.Charset := 'utf-8';
email.AddPlainTextAlternativeBody('This is a test');
email.AddHtmlAlternativeBody('<html><body><p>This is a <b>test</b></body></html>');

// We'll need to get the full MIME of the email encoded to a base64url string.
sbMime := TChilkatStringBuilder.Create(Self);
email.GetMimeSb(sbMime.ControlInterface);
sbMime.Encode('base64url','utf-8');

// The body of the HTTP request will be JSON..
json := TChilkatJsonObject.Create(Self);
json.UpdateSb('message.raw',sbMime.ControlInterface);

// Upload the email to GMail as a draft.
http := TChilkatHttp.Create(Self);
http.AuthToken := 'GMAIL-ACCESS-TOKEN';

url := 'https://www.googleapis.com/gmail/v1/users/me/drafts';
resp := TChilkatHttpResponse.Create(Self);
success := http.HttpJson('POST',url,json.ControlInterface,'application/json',resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

// A status code of 200 indicates success.
Memo1.Lines.Add('Response status code: ' + IntToStr(resp.StatusCode));
Memo1.Lines.Add('Response body:');
Memo1.Lines.Add(resp.BodyStr);

// The response body contains JSON.
// Use the online tool at Generate JSON Parsing Code
// to generate JSON parsing code.

// A sample successful JSON response:

// {
//  "id": "r-2607584557788895307",
//  "message": {
//   "id": "166f09932c662e93",
//   "threadId": "166f09932c662e93",
//   "labelIds": [
//    "DRAFT"
//   ]
//  }
// }
end;