Paytm Seller. Makes it easy to sign up and sell on Paytm from everywhere with our app. Paytm Seller app lets you become a seller in few easy steps, manage product listings and process orders on the go. What We Offer? Sign-up: Not a seller yet? Seamlessly sign-up using "Create Your Store Now" option. With this hassle-free sign-up, you can start selling on Paytm.