Email Formats

{
  "mx": [
    "10 mx-1.rightbox.com.",
    "10 mx-2.rightbox.com.",
    "10 mx-3.rightbox.com.",
    "10 mx-4.rightbox.com.",
    "10 mx-5.rightbox.com."
  ],
  "spf": [
    "v=spf1 mx mx:3pv.net include:sendgrid.net ~all"
  ]
}