Short answer
Compare aggregators like Shiprocket, NimbusPost, and Shyplite against direct carriers (DTDC, Bluedart, Delhivery) based on RTO percentage, volumetric weight calculation, COD remittance speed, and pin-code reach across tier-2 and tier-3 cities.
For D2C brands and online boutiques shipping individual orders:
Tell us what you're looking for and we'll point you to the right market or supplier.