Is it possible to send slack messages in a `FormulaMap`?

Ideally I would be able to do something like:

MyArrayOrTable.FormulaMap(Slack::PostMessage("the-channel", message, true))

The last bool is to indicate shared or private account.

I have a workaround in place where I push a button instead, and that will join all the messages I would like to send to one single message and posts that instead. That works for now, but ideally I actually would like to address each message to different people.

This feature is also something I would like to have for clicking buttons and using the gmail pack.