Sellers can upload their completed bulk upload files directly into our portal at https://poshmark.com/bulk-upload-create.
A link to this page will become live and available for use on your in-app listing creation page once we turn your account on as an enterprise closet (done during onboarding). Uploading of files can take place at anytime based on seller discretion.
For sellers connecting into Poshmark via a 3PL integration feed, please make sure all item SKUs you are uploading are created there (e.g., in DSCO or Rithum) with valid inventory quantities prior to uploading them in Poshmark.