- sender:
    name: "张三"
    address: "sender@example.com"
  to:
    - name: "李四"
      address: "recipient1@example.com"
    - name: null
      address: "to-noname@example.com"
    - name: "王五"
      address: "recipient2@example.com"
  cc:
    - name: "赵六"
      address: "cc1@example.com"
    - name: null
      address: "cc-noname@example.com"
    - name: "钱七"
      address: "cc2@example.com"
  bcc:
    - "bcc1@example.com"
    - "bcc2@example.com"
  subject: "测试邮件 1"
  text: "This is a test email with multiple recipients, CC, and BCC."
  html: "<html><body>This is a test email with multiple recipients, CC, and BCC.<br/></body></html>"
  attachments: []
- sender:
    name: "张三"
    address: "sender@example.com"
  to:
    - name: "李四"
      address: "recipient1@example.com"
    - name: null
      address: "to-noname@example.com"
    - name: "王五"
      address: "recipient2@example.com"
  cc:
    - name: "赵六"
      address: "cc1@example.com"
    - name: null
      address: "cc-noname@example.com"
    - name: "钱七"
      address: "cc2@example.com"
  bcc:
    - "bcc1@example.com"
    - "bcc2@example.com"
  subject: "测试邮件 2"
  text: "This is a test email with multiple recipients, CC, and BCC."
  html: "<html><body>This is a test email with multiple recipients, CC, and BCC.<br/></body></html>"
  attachments: []