Email security & deliverability · grade A
v=spf1 include:u3783051.wl052.sendgrid.net include:_spf.mxhero.com include:_spf.google.com include:rnmk.com include:spf.eco-serv.jp include:spf2.nlk2.smtps.jp ip4:180.148.171.128/25 ip4:202.143.79.0/24 ip4:182.236.93.72/32 ~all