External Subtypes let system admins define Subtypes for documents that route somewhere other than Safari's fulfillment systems — most commonly Non-Served Documents (NSDs). An NSD is any document that doesn't qualify as a Served Document, such as junk mail, customer complaints, or anything else that doesn't require service.
Once created, External Subtypes show up in the Reclassify dropdown (see SDM - Document Viewer Actions) alongside the standard Safari Subtypes. That way, a reviewer can classify these outside documents so they can be routed and reported on automatically.
On the SDM External Subtypes page, select NEW and fill in the following:
- SDM External Subtype Name (75 characters or fewer)
- Confirm the Type is set to Non-Served Document.
- AI Classification Description (200 characters or fewer)
- SDM Route*
- Set Active to Yes or No.
- Click SAVE.
*The SDM Route setting specifies the button that a Triager sees for this External Subtype in the SDM Document Viewer, and what 'Route All' assigns to it. Currently, 'Archive' is currently the only routing option for External Subtypes, so this field is read only. More routing options will be added as new destinations become available.
In the AI Classification Description, include keywords, document types, or patterns that set this Subtype apart from the others — that's what the AI uses to recognize it.

Once saved, the Subtype appears in the Reclassify dropdown in the Document Viewer. Note that when your company subscribes to SDM, the platform automatically creates a Junk External Subtype as an NSD; you can deactivate it on the SDM External Subtypes page if you don't need it.