Email Formats

{
  "mx": [
    "10 mx-biz.mail.am0.yahoodns.net.",
    "20 mx.sendgrid.net."
  ],
  "spf": [
    "v=spf1 +a +mx include:_spf.mx.cloudflare.net include:sendgrid.net include:yahoo.com include:amazonses.com include:mail.zendesk.com -all"
  ]
}