The Get Message action loads one Outlook message by its Microsoft message
ID. It requests the message twice so both plain-text and HTML body forms are
available.
Outputs
The current Get Message node does not expose attachment downloading, so
Attachments is an empty list. The New Email trigger downloads
attachments, and Get Conversation can download them when enabled.
Example
Connect a stored Outlook message ID to Get Message. The action returns the
message’s Conversation ID, which you can pass to Get Conversation when
you need the rest of the conversation.