SPF records are of interest to people who are concerned with cutting down the amount of spam circulating on the internet. The more people who make use of SPF records to allow emails from their domain to be verified, the more reliably email systems can recognise whether an email is legitimate or not. While creating SPF records will not immediately affect the amount of spam you receive, over time this protocol can make bulk emailing more difficult for spammers.

SPF is also of interest to domain holders who are concerned that forged headers are making it look like they are spamming, as a way to demonstrate that the email did not actually originate from their domain.