Mass actions used to mean Apex, quick actions with workarounds, or third-party tools. Winter '27 lets a plain screen flow do the job.
Where
Actions on list views and related lists, configured in Object Manager and consumed by users directly in Lightning list views.
How
You create a screen flow with a text collection variable named ids, available for input. When a user selects multiple records in a list view or related list and clicks the action, Salesforce passes the selected record IDs into that collection. When launched from a related list, the parent record ID is passed as well, so the flow knows its context.
Why
Bulk updates, mass record creation, and guided multi-record wizards no longer need code. Admins can build one screen flow and let users process dozens of records in a single run, straight from the lists they already work in.