Seel is a San Francisco-based post-purchase platform that uses AI to underwrite e-commerce returns. Its flagship product, Return Assurance (now branded Worry-Free Purchase), lets shoppers add a refund window to final-sale orders while merchants offload return liability to Seel. The company powers risk-free shopping for hundreds of brands and marketplaces and is building a new category of consumer financial product around the post-purchase moment.
Zack Peng is the founder and CEO of Seel, a San Francisco-based AI-powered return insurance platform that serves 2,000+ ecommerce merchants. A former software engineer at Orbital Insight with a philosophy and physics background from UNC Chapel Hill, Peng built Seel into an 8-figure platform in five years by turning ecommerce returns - historically a pure cost center - into a risk-priced insurance product. Backed by Lightspeed Venture Partners with over $29M raised through Series B, Seel enables merchants to offer extended return windows on final-sale and non-returnable items while using AI underwriting to manage refund liability at checkout.