Send Email with Attachments and inline images using mailgun apis in ionic2,Angular2

sendEmail(from:string, to:string,  subject:string, text:string, html:string, inlines:Array<any>):Promise<any> {
      let url = "https://api.mailgun.net/v3/" + this.domain + "/messages";
    
      var headers = new Headers();
      headers.append('Authorization', "Basic " + this.apiKey);
     
      headers.append('enctype', 'multipart/form-data');
      headers.append('Accept', 'application/json');
     
      var body:FormData = new FormData();
      body.append('from', from);
      body.append('to', to);
      body.append('subject', subject);
      body.append('text', text);
      body.append('html', html);
      body.append('attachment', inlines[1].data, inlines[1].filename);
      body.append('inline', inlines[0].data, inlines[0].filename);
   
       let options = new RequestOptions({ headers: headers });
             
     return this.http.post(url ,body,options).map(res => res.json()).toPromise();
     
     
    
    }