Email security & deliverability · grade A
v=spf1 ip4:23.253.182.0/23 ip4:37.188.97.188 ip4:50.23.218.192/27 ip4:50.31.32.0/19 ip4:54.231.10.172 ip4:64.18.0.0/20 ip4:64.233.160.0/19 ip4:66.102.0.0/20 include:spf1.appboy.com -all