List once. Sell everywhere.
The reseller operating system that lets you create a single listing and cross-post it to eBay, Poshmark, Mercari, Depop, Facebook Marketplace, and more — with automatic inventory sync and delisting.
Supported marketplaces
eBay
Etsy
Poshmark
Mercari
Depop
Facebook Marketplace
Craigslist
OfferUp
Vinted
Grailed
One universal form
Enter your item details once. PostMost translates and publishes to each marketplace automatically.
Auto-sync inventory
When an item sells on one platform, PostMost delists it everywhere else to prevent double selling.
API + automation
Uses official APIs where available, with a secure automation engine for platforms without APIs.