Freight lines on orders are sent to your ecommerce platform with the following 6 character codes:

Amazon

Expedited : AMZEXP
FreeEconomy : AMZFRE
NextDay : AMZNXT
SameDay : AMZSMD
SecondDay : AMZSCD
Scheduled : AMZSCH
Standard : AMZSTD

 

eBay

E + 5 digit padded ebay Shipping Service ID.

e.g. E00010 for 'USPS First Class Package' Standard shipping on eBay.com

For the complete list of eBay shipping service IDs click here: 

eBay shipping service IDs Dec 2017.csv