One of our clients brought to my attention that FME Flow doesn’t support SFTP triggers, even though SFTP is a supported protocol for external actions and FTP triggers are supported.

The current work around is to use an FTPCaller transformer in the workspace and use a schedule for change detection. 

Adding an SFTP trigger in FME Flow Automations would be beneficial for lots of organizations as it enables a secure file transfer protocol for automations triggers that’s not possible with just FTP.