如何通过 SendGrid API v3 发送模板化电子邮件?

How to send templated email via SendGrid API v3?

在他们的文档中,SendGrid 描述了一个 structure 被发送到 API:

{ "to": // list of emails
  "sub": // list of substitutions
  "filters": // template ID here
}

但是具体应该如何与mail send结构一起使用呢?

{ "personalizations": 'to' and 'subject' here
  "from": ...
  "content": ... }

模板文档还说:

If you are using the Web API v3 mail send endpoint, you can specify which transactional template you would like to use simply by setting the template ID in the template_id parameter of your JSON payload.

"Simply"。好的。但是我的替代品将如何指定呢?

好吧,下面是一个工作示例。这与 v3 文档不同。

{
  "personalizations" : [ {
    "substitutions" : {
      ":name" : "John"
    },
    "subject" : "Hello from Java",
    "to" : [ {
      "email" : "john@example.com"
    } ]
  } ],
  "from" : {
    "email" : "john@example.com"
  },
  "template_id" : "11111111-1111-1111-1111-111111111111"
}