Android™
Mailgun Send Send HTML Email with Attachments and HTML Images

Sends an HTML email with images and attachments.
Chilkat Android™ Downloads

Android™
// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    boolean success = false;

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

    CkHttp http = new CkHttp();

    http.put_Login("api");
    http.put_Password("sending_api_key");    //  Replace with your actual sending API key.

    CkHttpRequest req = new CkHttpRequest();
    req.put_HttpVerb("POST");
    req.put_Path("/v3/YOUR_DOMAIN_NAME/messages");
    req.put_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("html","<html><body><b>This is the HTML body</b><br><img src=\"cid:cidStarfish.jpg\"></body></html>");

    // An a attachd file
    CkBinData bd = new CkBinData();
    success = bd.LoadFile("qa_data/hamlet.zip");
    if (success == false) {
        Log.i(TAG, "Failed to load file attachment.");
        return;
        }

    req.AddBdForUpload("attachment","hamlet.zip",bd,"application/zip");

    // add an image as CID
    success = bd.LoadFile("qa_data/jpg/starfish.jpg");
    if (success == false) {
        Log.i(TAG, "Failed to load HTML image.");
        return;
        }

    req.AddBdForUpload("inline","cidStarfish.jpg",bd,"image/jpeg");

    CkHttpResponse resp = new CkHttpResponse();
    success = http.HttpSReq("api.mailgun.net",443,true,req,resp);
    if (success == false) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    CkStringBuilder sbResponseBody = new CkStringBuilder();
    resp.GetBodySb(sbResponseBody);
    CkJsonObject jResp = new CkJsonObject();
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    Log.i(TAG, "Response Body:");
    Log.i(TAG, jResp.emit());

    int respStatusCode = resp.get_StatusCode();
    Log.i(TAG, "Response Status Code = " + String.valueOf(respStatusCode));
    if (respStatusCode >= 400) {
        Log.i(TAG, "Response Header:");
        Log.i(TAG, resp.header());
        Log.i(TAG, "Failed.");
        return;
        }

    // 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

    String id = jResp.stringOf("id");
    String message = jResp.stringOf("message");

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}