star adds Gmail’s STARRED system label to one or many messages. Use it to surface important mail in Gmail’s Starred view or flag mail for a person.
Example
Star newly received messages from a VIP sender:Inputs
Every input field also accepts a compatible
Signal; the example passes the filtered message ID signal directly.
Output
The action returns aSignal<string[]> containing the modified message IDs in input order.
The action applies Gmail’s STARRED label to individual messages. It does not select among the visual star styles configured in Gmail.