big delivery companies in india

 pickup and delivery selrvice in 20k pincodes by mahindra logistics

https://www.shiprocket.in/  they have tie up with all companies 220 countries API

https://www.ecourierz.com/  may be ship rocket uses this..  single order to whitelabel chanel 220 countries API 

fed ex

https://shipway.com/

https://www.rivigo.com/

many big companies use this

https://www.xpressbees.com/

delhivery

ecom express

https://ecomexpress.in/