How to send an email with ionic framework using the native email application?(android and ios)

Hi, I am going to teach about how to send an email with ionic framework using the native email application in ionic 3 and Angular 4.

First, we want to install ionic Cordova plugin in CLI.

                  $ ionic cordova plugin add cordova-plugin-email-composer

                  $ npm install --save @ionic-native/email-composer

Home.html

          <ion-header>

              <ion-navbar>

                  <ion-title>

                       EMAIL

                  </ion-title>

               </ion-navbar>

           </ion-header>

          <ion-content padding fullscreen="true">

               <div text-center style="margin-top: 5cm">

                      <button ion-button (tap)="send()">Send-Email</button>

                 </div>

          </ion-content>                                    

app.module.ts

     import { EmailComposer } from '@ionic-native/email-composer';

     providers: [

             .....            

           EmailComposer,

             .....

              ]     

Home.ts

      import { Component } from '@angular/core';

      import {NavController, ToastController} from 'ionic-angular';
      import { EmailComposer } from '@ionic-native/email-composer';
      @Component({
           selector: 'page-home',
           templateUrl: 'home.html'                })
      export class HomePage {    
      constructor(private emailComposer: EmailComposer) {

       }

      send(){
      this.emailComposer.isAvailable().then((available: boolean) =>{
      if(available) {
        //Now we know we can send      }
      });

      let email = {
      to: 'example@gmail.com',
      subject: 'Cordova Icons',
      body: 'How are you? Nice greetings from Leipzig',
      isHtml: true       };