How to send an email programmatically from a custom Order Confirmation Page- Magento 2 CE

Question

I am attempting to send an email from my custom success.phtml file that will contain some needed information.

Everything else in the success file works except for the email part.

I have tried sending email with a template and without one.

The Order Confirmation Page is blank when I use the email code.

I am still a Magento newbie.

I have looked at and used other examples and code, and even the Magento 2 github ones, but obviously I don't understand what is missing.

I used the code from the answer of this post as a guide: how to send custom email no template in magento2?

Can anyone tell me what I need to change in my code?

This is what I have for my latest coding attempt:

In the web server, I made a file called email_templates.xml in /home/userName/public_html/mySite/app/etc/ .

In that email_templates.xml file I pasted the code below:

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Email:etc/email_templates.xsd">
    <template id="myemail_email_template" label="My Label" file="myemail.html" type="text" 

module="Modulename_Namespace" area="frontend"/>
</config>

---

I then made a file called myemail.html in /home/userName/public_html/mySite/vendor/magento/module-email/view/frontend/email

In that myemail.html file I pasted the code below:

<!--@subject Promopoup@-->
{{trans "My var: %myVar" myVar=$data.myvar}}

---

This is the email part that I pasted in my custom success.phtml file:

<?php

$emailTemplateVariables = array();
$emailTempVariables['myvar'] = $myvar;

$senderName = 'notARealName.com';

$senderEmail = '[email protected]';

$email = '[email protected]';

$postObject = new \Magento\Framework\DataObject();
$postObject->setData($emailTempVariables);

$sender = ['name' => $senderName,'email' => $senderEmail];

$transport = $this->_transportBuilder->setTemplateIdentifier('myemail_email_template')-

>setTemplateOptions(['area' =>\Magento\Framework\App\Area::AREA_FRONTEND,'store'=>

\Magento\Store\Model\Store::DEFAULT_STORE_ID])
                ->setTemplateVars(['data' => $postObject])
                ->setFrom($sender)
                ->addTo($email)
                ->setReplyTo($senderEmail)            
                ->getTransport();               
                $transport->sendMessage();

?>

Thanks.

Answer 1

<?php
public function sendMailAction(){
$html="
put your html content here
blah blah

";
$mail = Mage::getModel('core/email');
$mail->setToName('Your Name');
$mail->setToEmail('Youe Email');
$mail->setBody('Mail Text / Mail Content');
$mail->setSubject('Mail Subject');
$mail->setFromEmail('Sender Mail Id');
$mail->setFromName("Msg to Show on Subject");
$mail->setType('html');// YOu can use Html or text as Mail format

try {
$mail->send();
Mage::getSingleton('core/session')->addSuccess('Your request has been sent');
$this->_redirect('');
}
catch (Exception $e) {
Mage::getSingleton('core/session')->addError('Unable to send.');
$this->_redirect('');
}
}
?>

and you can get the sender email using

$senderEmail = Mage::getStoreConfig('trans_email/ident_general/email');