How to add custom Email attachment with .html format

Question

I have to add the email attachment. I have create a custom module

public function execute()
{
 $post = $this->getRequest()->getPostValue();
 if (!$post) {
 $this->_redirect('/');
 return;
 }
 $this->inlineTranslation->suspend();
 try {
 $recipientMail = $this->getRequest()->getPostValue('email');
 $postObject = new \Magento\Framework\DataObject();
 $postObject->setData($post);
 $error = false;
 $sender = [
 'name' => 'Test',
 'email' => '[email protected]',
 ];
 $storeScope = \Magento\Store\Model\ScopeInterface::SCOPE_STORE;
 $transport = $this->_transportBuilder
 ->setTemplateIdentifier('send_email_email_template') // this code we have mentioned in the email_templates.xml
 ->setTemplateOptions(
 [
 'area' => \Magento\Framework\App\Area::AREA_FRONTEND, // this is using frontend area to get the template file
 'store' => \Magento\Store\Model\Store::DEFAULT_STORE_ID,
 ]
 )
 ->setTemplateVars(['data' => $postObject])
 ->setFrom($sender)
 ->addTo($recipientMail)
 ->getTransport();
 $transport->sendMessage();
 $this->inlineTranslation->resume();
 $this->messageManager->addSuccess(
 __('Thanks for contacting us. We\'ll respond to you very soon.')
 );
 $this->_redirect('/');
 return;
 } catch (\Exception $e) {
 $this->inlineTranslation->resume();
 $this->messageManager->addError(
 __('We can\'t process your request right now. Sorry, that\'s all we know.' . $e->getMessage())
 );
 $this->_redirect('/');
 return;
 }
 }
}

• Shashank Kumrawat: Please add your code snippet here whatever you have tried ? and what problem you are getting.
• Divya: Send Email is working properly, I have to add the attachment file with the email
• Shashank Kumrawat: have you checked these URLs magento.stackexchange.com/questions/104044/… and dckap.com/blog/how-to-attach-a-pdf-file-to-emails-in-magento-2
• Divya: $attachment = $_transportBuilder->addAttachment($pdfData,$fileName); $bodyPart = new \Zend\Mime\Message(); $bodyPart->setParts(array($bodyMessage,$attachment)); $transport->getMessage()->setBody($bodyPart)
• Divya: I have tried this one, but not working