Extend the Slack task to allow sending files as attachments

[anna-geller]

Slack task(s)

First, we need to make sure that attachments are possible on the Slack task.

Create a blueprint and a how-to guide on how to extract data from external source (via HTTP download) and sending that data directly via Slack and Email

I've heard feedback from a user who tried to simply extract data via HTTP download and then send that data as an email attachment or Slack attachment. We should create a guide on:

1. How to set up Gmail to receive an email with an attachment
2. How to configure Slack incoming webhook payload to receive data as an attachment to a Slack message

This blog post has a good example that can be used as a starting point for the Email attachment setup https://motherduck.com/blog/motherduck-kestra-etl-pipelines/

[mgabelle]

After investigating for the Slack plugin :

• Sending attachments with the IncomingWebhook is not possible.
• We can send attachements but using a different API and a different authentication mode

[anna-geller]

Let's add that if we can, thx a lot Matt 👍