Email Formats

{
  "spf": [
    "v=spf1 +include:_netblocks.m.feishu.cn -all",
    "v=spf1 mx include:spf.mailjet.com include:_netblocks.m.feishu.cn ?all",
    "v=spf1 include:qcloudmail.com ~all"
  ]
}