SPF1

Category - Email Security

Sender Policy Framework is an email authentication method designed to detect forging sender addresses during the delivery of the email


We have discovered  31,911,444 live websites   that are using SPF1.

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Technology usage statistics

Websites using SPF131,911,444 websites
Most popular in the country United States
Market position in Email Security#1
Market share in Email Security95.04%

Technology adoption

Recent changes in SPF1 usage. (See SPF1 Usage Changes report)
Websites that added SPF1+881,464
Websites that dropped SPF1-202,630

SPF1 usage distribution by website rank

The correlation between utilization of SPF1 technology and the relative popularity of websites

Market Share

SPF1 market share within the Email Security category



Geographical Distribution

Technology usage distribution by websites across the globe.



Websites utilizing SPF1

Top websites that use SPF1
DomainCountryRankContacts
facebook.com United States2
google.com United States3
wordpress.org United States4
youtube.com United States6
twitter.com United States7
googletagmanager.com United States8
See full domain list

Alternative Technologies


MailChannels: Total 627,110 domains found using MailChannels
Proofpoint Essentials: Total 286,620 domains found using Proofpoint Essentials
DMARC: Total 131,606 domains found using DMARC
Mimecast: Total 114,770 domains found using Mimecast
SPF2: Total 104,062 domains found using SPF2
DKIM1: Total 87,643 domains found using DKIM1
AppRiver: Total 44,691 domains found using AppRiver
Sophos: Total 43,720 domains found using Sophos
Hornetsecurity: Total 39,249 domains found using Hornetsecurity
TrendMicro Email Security: Total 28,191 domains found using TrendMicro Email Security




Alternative Names

  • Sender Policy Framework