(Delphi ActiveX) Insert Email into GMail Folder

Directly inserts a message into only this user's mailbox similar to IMAP APPEND, bypassing most scanning and classification. Does not send a message.

This example will create a Chilkat Email object and upload/insert it into GMail. Then adds the "INBOX" label to the email to make it appear in INBOX

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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;
http: TChilkatHttp;
resp: TChilkatHttpResponse;
url: WideString;
json: TChilkatJsonObject;
id: WideString;
json2: TChilkatJsonObject;

begin
success := 0;

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

email := TChilkatEmail.Create(Self);

// This example chooses to load an email from a file.
success := email.LoadEml('qa_data/eml/testEmail.eml');
if (success = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

// Get the email as MIME.
sbMime := TChilkatStringBuilder.Create(Self);
email.GetMimeSb(sbMime.ControlInterface);

http := TChilkatHttp.Create(Self);
resp := TChilkatHttpResponse.Create(Self);

http.AuthToken := 'GMAIL-ACCESS-TOKEN';

// Upload to GMail (does not send, but just inserts).

// IMPORTANT: After uploading/inserting, you won't see the message in the Inbox.
// In your web browser, if you go to "All Mail", you will see it.

url := 'https://www.googleapis.com/upload/gmail/v1/users/me/messages?uploadType=media';
http.UncommonOptions := 'SendGzipped';
success := http.HttpSb('POST',url,sbMime.ControlInterface,'utf-8','message/rfc822',resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;
http.UncommonOptions := '';

// 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.
// A sample successful JSON response:

// {
//  "id": "166f583051d36144",
//  "threadId": "166f5529e079a456"
// }

json := TChilkatJsonObject.Create(Self);
json.Load(resp.BodyStr);
id := json.StringOf('id');

// Add the Inbox label to the inserted email so that it appears in Inbox.
Memo1.Lines.Add('---- Adding the Inbox label to the newly inserted email. ----');

// Create the following JSON to be sent in a POST to modify labels for this message.
// {
//   "addLabelIds": [
//     "INBOX"
//     ]
// }

json2 := TChilkatJsonObject.Create(Self);
json2.UpdateString('addLabelIds[0]','INBOX');

http.SetUrlVar('id',id);
url := 'https://www.googleapis.com/gmail/v1/users/me/messages/{$id}/modify';

success := http.HttpJson('POST',url,json2.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.
// A sample successful JSON response:

// {
//  "id": "166f583051d36144",
//  "threadId": "166f583051d36144",
//  "labelIds": [
//   "INBOX"
//  ]
// }
end;