Email security & deliverability · grade A
v=spf1 ip4:143.192.150.220 ip4:143.192.150.221 ip4:143.192.150.222 ip4:143.192.150.223 ip4:143.192.150.224 ip4:143.192.150.225 ip4:143.192.150.226 ip4:143.192.150.227 ip4:143.192.150.228 include:_spf.protonmail.ch -all