Postman's Newman integration in Node-RED
You can launch easily a postman collection using the runner, that is called Newman, within just 1 node:
You can configure the node with the full functionalities that newman offers, since the node's configuration is intented to be a free-text box where configure the options that you want to use that newman accepts. This input box is parsed with mustache, making more powerfull the execution without the necessity of additional nodes.