Working with Relays What is a Relay? Relays transfer copies of uploaded files to specified destinations (custom inboxes). There are two types of relays: package relays and file relays. Package Relays A package relay transfers copies of files uploaded to a source node to specified nodes. Package relays preserve the package directory structure. File Relays A file relay transfers copies of files uploaded to a source node to specified nodes. File relays do not preserve the package directory structure. File relays transfers files to storage in a flat structure. This is ideal for ingesting files without having to parse nested data from package structure (such as providing files for API consumption). Tracking Relay Progress and Status You can track the progress of a relay by going to Server > Packages > Relay. Using Metadata Fields to Set Relay Destinations Use the SenderShareId, RecipientShareIds, OverrideShareIds metadata fields to configure relays for a package upload.