邮箱-邮件组成员 Number of APIs: 4 批量获取邮件组成员 GET {{base_url}}/mail/v1/mailgroups/:mailgroup_id/members 创建邮件组成员 POST {{base_url}}/mail/v1/mailgroups/:mailgroup_id/members 获取邮件组成员信息 GET {{base_url}}/mail/v1/mailgroups/:mailgroup_id/members/:member_id 删除邮件组成员 DELETE {{base_url}}/mail/v1/mailgroups/:mailgroup_id/members/:member_id