Email security & deliverability · grade A
v=spf1 ip4:192.197.156.0/24 ip4:198.37.148.119 include:spf.protection.outlook.com include:esa1.gmac.iphmx.com include:esa2.gmac.iphmx.com include:504970.spf08.hubspotemail.net include:sendgrid.net include:_spf.qualtrics.com include:mail.zendesk.com ?all