allprojects {
		repositories {
			...
			maven { url 'https://jitpack.io' }
		}
	}

	dependencies {
	        implementation 'com.github.wwdablu:SendGridAndroid:1.0.0'
	}

SendGridAndroid sendGridAndroid = new SendGridAndroid(SENDGRID_API);

EMail eMail = new EMail();

eMail.addTo("John Doe", "[email protected]")
    .setSubject("Test Email")
    .setReplyTo("No One", "[email protected]")
    //.setTextContent("Hello World")
    .setHtmlContent(getDemoHtml())
    //.addAttachment("attachment.pdf", pdfFile)
    .setFrom("Postman", "[email protected]");
    
sendGridAndroid.send(eMail)
    .observeOn(AndroidSchedulers.mainThread())
    .subscribeOn(Schedulers.io())
    .subscribeWith(new DisposableObserver<Void>() {
        @Override
        public void onNext(Void aVoid) {

        }

        @Override
        public void onError(Throwable e) {
            Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onComplete() {
            Toast.makeText(MainActivity.this, "Sent", Toast.LENGTH_SHORT).show();
        }
    });