Delphi ActiveX

Mailgun Send Simple Email

See more Mailgun Examples

Send a simple email using Mailgun. 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;
http: TChilkatHttp;
req: TChilkatHttpRequest;
resp: TChilkatHttpResponse;
sbResponseBody: TChilkatStringBuilder;
jResp: TChilkatJsonObject;
respStatusCode: Integer;
id: WideString;
message: WideString;

begin
success := 0;

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

http := TChilkatHttp.Create(Self);

// Implements the following CURL command:

// curl -s --user 'api:SENDING_API_KEY' 
// 	 https://api.mailgun.net/v3/YOUR_DOMAIN_NAME/messages 
// 	 -F from='Your Name <mailgun@YOUR_DOMAIN_NAME>' 
// 	 -F to='Joe Example <joe@example.com>' 
// 	 -F subject='Hello Joe Example' 
// 	 -F text='Congratulations Joe Example, you just sent an email with Mailgun!  You are truly awesome!'

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

http.Login := 'api';
http.Password := 'sending_api_key';//  Replace with your actual sending API key.

req := TChilkatHttpRequest.Create(Self);
req.HttpVerb := 'POST';
req.Path := '/v3/YOUR_DOMAIN_NAME/messages';
req.ContentType := 'multipart/form-data';

// Change YOUR_DOMAIN_NAME to something like "mg.your-domain.com".
req.AddParam('from','Your Name <mailgun@YOUR_DOMAIN_NAME>');
req.AddParam('to','Joe Example <joe@example.com>');
req.AddParam('subject','Hello Joe Example');
req.AddParam('text','Congratulations Joe Example, you just sent an email with Mailgun!  You are truly awesome!');

resp := TChilkatHttpResponse.Create(Self);
success := http.HttpSReq('api.mailgun.net',443,1,req.ControlInterface,resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

sbResponseBody := TChilkatStringBuilder.Create(Self);
resp.GetBodySb(sbResponseBody.ControlInterface);
jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);
jResp.EmitCompact := 0;

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(jResp.Emit());

respStatusCode := resp.StatusCode;
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(resp.Header);
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "id": "<20210429234809.1.2D550E1C94D3D98F@sandbox0e542e4c577f4bbb98c8bf6b6bca727b.mailgun.org>",
//   "message": "Queued. Thank you."
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

id := jResp.StringOf('id');
message := jResp.StringOf('message');
end;