Create a new TXT record by clicking the Quick add button
Set the Host field to the name of your subdomain (e.g. "mail" if your email address is contact@mail.example.com), or to @ if you do not use a subdomain.
Fill the TXT Value field with your SPF record (e.g. "v=spf1 a mx include:secureserver.net ~all").
Click on the Save Zone File button at the top of the page.
