This developer guide shows how to access Nightline shipping API via Postmen. See also the list of required API credentials / keys for Nightline integration.

Get Nightline Developer Credentials

Email Nightline sales representative and cc support@postmen.com Tell Nightline you need to obtain API credentials to access Nightline API.
Nightline will provide Nightline credentials for both Sandbox and Production environment:  Username,  Password, Customer code and API Key

Required Nightline API credentials


Nightline Developer Resources

Read Nightline API docs
Supported Nightline service types
Postmen Nightline technical support: support@postmen.com