Bastian Lehmann’s TipTop launches an app that scans for past purchases in users’ Gmail and Amazon accounts and offers to buy their used products at a fair value (Alex Konrad/Forbes)

Bastian Lehmann’s TipTop launches an app that scans for past purchases in users’ Gmail and Amazon accounts and offers to buy their used products at a fair value (Alex Konrad/Forbes)

Alex Konrad / Forbes:
Bastian Lehmann’s TipTop launches an app that scans for past purchases in users’ Gmail and Amazon accounts and offers to buy their used products at a fair value  —  Billed as a “reverse Postmates,” TipTop has launched its first app, TipTop Cash, with the promise to help shoppers resell products like used iPhones.