Email security & deliverability · grade A
v=spf1 include:spf.protection.outlook.com include:_spf2.mailgun.org include:mail.zendesk.com include:_spf.psm.knowbe4.com include:21917282.spf06.hubspotemail.net ip4:13.65.24.56 ip4:157.55.141.175 ip4:172.183.138.82 ip4:20.188.71.90 ~all