Email Formats
{
"mx": [
"10 mailstream-central.mxrecord.mx.",
"20 mailstream-eu1.mxrecord.io.",
"20 mailstream-west.mxrecord.io.",
"5 mailstream-east.mxrecord.io."
],
"spf": [
"v=spf1 include:spf.protection.outlook.com include:mailgun.org include:%{l}._spf.%{d} include:_spf.salesforce.com -all"
]
}