To use API you must add the API key to request. We support 3 methods by adding API key parameter.

1. By adding parameter to request's URI. I.e. http://api.smartnews360.com/v1/newsletter/{nId}/archive?X-sn360-api-key=kkkfrTYTDTSDnneu93SKkd

1. By adding X-sn360-api-key as for parameter.

1. By adding X-sn360-api-key HTTP header.