Email security & deliverability · grade A
v=spf1 include:_spf.google.com include:_spf.psm.knowbe4.com include:mail.zendesk.com include:amazonses.com include:customeriomail.com ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:185.249.220.0/24 ip4:185.225.161.0/24 ~all