这个才比较有诚意
https://app.cloudcone.com/events/christmas/?utm_source=encharge&utm_medium=email&utm_campaign=12+Days+of+X-mas+goes+live&ref=5911&utm_content=Grab+yourself+Cloud+Credits+%26+T-Shirts+by+taking+part+in+our+Christmas+Event%21
之前的活动
https://91ai.net/thread-1249290-1-1.html
诚意, 免费送, utm_medium