Email security & deliverability · grade A
v=spf1 mx ip4:74.52.192.48/28 ip4:107.22.190.27 ip4:208.91.135.0/24 include:amazonses.com include:spf.protection.outlook.com include:_spf.google.com include:_spf.salesforce.com include:aspmx.sailthru.com ~all