Slack action to lookup user by email

There are slack actions for getting a user profiles but this requires providing their ID. I have workflows where I’m associating users across systems by their email and so would need to lookup a slack user with it.

The Slack API method users.lookupByEmail works for this (and is even present in the slack Automations workflows) but is not available in n8n.

I’ve worked around it with a HTTP request node which is rather clumsy. It would work much better if I could use the email lookup as a native action in the workflow.