Domains with DNS TXT v=spf1 include:_spf.google.com include:sendgrid.net include:mandrillapp.airhelp.com -all

There are 20 domains that have DNS TXT set to v=spf1 include:_spf.google.com include:sendgrid.net include:mandrillapp.airhelp.com -all. The top 20 records ordered by domain rank are listed below.