这是一种分层可选协议的设计：核心字段（id、meta、capabilities、config）是必须的，其余功能按需实现。一个简单的 webhook 通道可以只实现 outbound；一个功能完整的平台可以实现全部 Adapter。
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It can be fine-tuned for specific tasks such as generating images of a certain，这一点在safew官方下载中也有详细论述
If the subject line of the email is irrelevant to customers, they will ignore it multiple times. But, if it keeps repeating, they are intercepted and unsubscribed from your emails. So, send relevant emails for the benefit of the customer. Don't send emails that often only focus on sales, offers and discounts.