Web Hosting Providers
Email Hosting Providers

SPFSPF

SPF Usage Statistics · Download List of All Websites using SPF

The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.

SplioSplio

Splio Usage Statistics · Download List of All Websites using Splio

CEM solutions in SaaS mode for marketing and sales teams.

Marketing Platform

Sender IDSender ID

Sender ID Usage Statistics · Download List of All Websites using Sender ID

Sender ID is an anti-spoofing email framework heavily based on SPF.