There are cases where I want to upload the files to slack, and not immediately send it. My example is I want to send a message with the correct attachments within the message a user specifies (and not two separate messages). I want two endpoints support: specifically I want to be able to upload them to slack as an external url, and create my own file block to send it within a channel.
Description
There are cases where I want to upload the files to slack, and not immediately send it. My example is I want to send a message with the correct attachments within the message a user specifies (and not two separate messages). I want two endpoints support: specifically I want to be able to upload them to slack as an external url, and create my own file block to send it within a channel.
(Optional) Slack's documentation