Email Formats

{
  "mx": [
    "10 mx1.emailsrvr.com.",
    "20 mx2.emailsrvr.com."
  ],
  "spf": [
    "v=spf1 include:_spf.firespring.com include:spf1.worldapp.com include:sendgrid.net include:emailsrvr.com ~all"
  ]
}