C2C means customer to customer. One of the e-commerce models where consumers trade or exchange goods with each other on an online platform. This is mediated by another platform where in terms of market classification consumers mainly exchange products or information and experiences about these products or services. These can be various exchanges or auctions, like Ebay.com or Vinted.com.
TikTok Shop Ends External USPS Labels In US From January 2026
TikTok Shop will stop accepting USPS shipping labels bought outside its platform from January 2026. Sellers using ShipStation, Shopify or similar tools will need to switch to TikTok Shipping or pick a different carrier.




