Email security & deliverability · grade A
v=spf1 mx include:_spf.google.com include:amazonses.com include:2670073.spf07.hubspotemail.net include:spf.mandrillapp.com include:_spf.psm.knowbe4.com ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ~all