Domains with DNS TXT v=spf1 include:_spf.protonmail.ch include:_spf.google.com include:spf.improvmx.com mx ~all

There is 1 domain that have DNS TXT set to v=spf1 include:_spf.protonmail.ch include:_spf.google.com include:spf.improvmx.com mx ~all.

Top Domains with TXT set to v=spf1 include:_spf.protonmail.ch include:_spf.google.com include:spf.improvmx.com mx ~all