curl -H "Content-Type: application/json" -X POST https://ssl.newsman.app/api/1.2/rest/your_user_id/your_api_key/transactional.templateDelete.json
 
{
  "list_id": "the_list_id",  
 
  "template_id": "test_html_tpl_3"    
}

<?php
 
require_once("Newsman/Client.php");
 
// you can get your API KEY, your newsman_user_id and list_id from My account -> API
$newsman_user_id = "your-user-id";
 
$api_key = "your-api-key";
 
$list_id = "your-list-id";
$template_id = "test_html_tpl_3";
 
try {
	$client = new Newsman_Client($newsman_user_id, $api_key);
	$ret = $client->transactional->templateDelete($list_id, $template_id);
} catch (Exception $e) {
	//do something with the error, eg: log $e->getMessage()
}
 
return $ret;
 
?>

import newsman
 
user_id = "your_user_id"
api_key = "your_api_key"
 
list_id = "your_list_id"
 
template_id = "test_html_tpl_3"
 
client = newsman.Newsman(user_id, api_key)
client.transactional.templateDelete(list_id, template_id)

RESTClient client = new RESTClient("your_user_id", "your_api_key");
 
var _params = new NameValueCollection();
    _params["list_id"] = "your-list-id";             
    _params["template_id"] = "test_html_tpl_3";        
 
var response = client.CallMethod("transactional", "templateDelete", _params);