bolt-js | A framework to build Slack apps using JavaScript | Websocket library

I'm currently writing a Slack bot using BoltJS and wanted to add verification using the integrated verify() method, which needs the signing secret as well as the incoming request. The problem is, that commands triggering the app.command() method do not provide the whole request. It only provides the payload and thereby the verify() method throws following error:

Is it possible to send data gathered from a Slack modal to an external site?

I’m using Slack Bolt for JavaScript

I’ve tried receiver.router.post('siteToSendData', (req, res) => { // You're working with an express req and res now. console.log('post to slack') res.send(dataToSend); });

I am trying to implement email validation in Slack modal. documentation is here. https://slack.dev/bolt-js/concepts#acknowledge If I enter valid email, it works well. And If I enter invalid email, it occurs error.

I believe that it occurs because of ack() with errors. So, I want to ask. What is the meaning of "name": "email_address", in below code?