Slowest - Flipkart& myntra both are using delhivery courier to ship most of the items via delhivery& it takes almost 6-7 days or sometimes 10 days to deliver. Placed one order on flipkart& it was shipped from delhi& package was lying in delhib hub, origin for 3 days after that it was dispatched from there& arrived at mumbai on 5 th day& delivered by them on 7th day. It is the slowest courier I have ever seen. Package handling is good most of the items I get in intact condition as shipped.